So cool that you show how your pump works. I am always open myself about my medical conditions such as the fact that I had gastric bypass (RNY) in 2017. So good luck to you and I enjoy every video!
A good friend and work colleague of mine has the same medical condition as Adrien. He always went quickly low on sugar while as our work was physically exhausting. Years ago he tried that pump and it was helping him just fine, but I was amazed by the stupidity of other colleagues, who was annoyed by the humming noise of the pump, which I thought was negligible and a really small price to pay compared to the huge advantage of the constantly measuring and regulating of the sugar/insulin level. Because of stupid comments like "if you wouldn`t eat that much candy, you wouldn't need that annoying pump" and despite I explained l and argued with the possibly mentally retarded colleagues the complaints did not end so he switched back to the common method of measuring and injecting the insulin himself. Please take that in consideration and the fact, so my friend told, that the first couple of days (and nights) it might annoy you yourself. This is really awesome and much more healthy. 🖖🏻
Adrian I always worry one Wednesday I’m gonna look and not see something from you..based on your previous comments a bit ago😧…I just wanted to say when I look and see something new it makes me smile…I appreciate it thank you man!! But don’t burn yourself out…if you ever did cut back production I would understand…I’m sure you spend more hours than I could imagine doing this…don’t burn yourself out on your hobby!! Anyways appreciate you and love the videos!!
You’re the Bob Ross of vintage tech repair. Been having a tough go lately, and these always help to cheer me up. Thanks for the wholesome and interesting content.
With the VIC-20 missing the regulator, you could install a modern, switching regulator and the machine will run a lot cooler and will only need a small heatsink.
And if the onboard regulator was anywhere near as crappy as the one in the later power brick, it'll be a lot less likely to fry itself than an unmodified unit.
@@adriansdigitalbasement Ya I repaired that board over a year ago, I replaced the memory chip and the Vic II and the power regulators ... when I got the board the little metal heat sink for the power regulator was stuck in the cart slot :) ... I have 4 other c64s which have 8 pin dins for the video and while I got this one working I couldn't use it because of the 5 pin din so I decided to pass it along and hopefully you will find somebody to love it :)
Hey Adrian, just watched your repair on the IIGS logicboard, but since you have comments disabled there, I'm commenting here. I really enjoyed it, and learned a few things. The GS was my favourite, well still is my favourite computer. It was my main computer up until about 1996 Anyways, I wanted to mention that by putting the sockets on the Standard RAM area to replace the bad RAM will prevent you from properly seating the front part of the case where the lid hinges in. The added height of the socket will obstruct that panel, so if you want to run that board in the case, you will have to solder the RAM directly on the board. Also, GS/OS 6.0.2 and 6.0.3 have some bugs. Best to go with 6.0.1 which is the last version released by Apple, or 6.0.4 I hope you will do a retrospective at some point, now that you've had the thought. :)
Back in the 80s and begin of the 90s, that was how you got new software, mouth-by-mouth advertisements. Sage aka KHK was big in Germany after lot of people told you its great. Basically, it was a UI onto Access and super bad, but the best at the time lol On Commodore, it was most of the time buy and cry tbh. because the software was so bad, but the only one out there, people learned to program their stuff themselves. Good old times
Great vid. Funny thing about those early 2 prong AC Vic-20s is that you can also use DC voltage directly to the plug and get them to work. Everything will work, even the cassette drive, except some possible user port peripherals that are expecting AC. No idea what those would be. I have heard you can even go as low as 9VDC 2A and you get a cooler running Vic-20 with a working cassette port. I am using a 12VDC 3A adapter for my spare 2 prong Vic-20 and it works great. Cassette loading included. I don't have any user port devices...
The PowerPC board is from a PowerMac 6100 or Performa 61xx series. The riser board lets you put a couple different expansion boards into the 6100: A Nubus adapter board, the AV board, or a 486 DOS Compatibility board. There are also accelerator boards that can replace the riser board to put faster processors into the 6100.
@@thedungeondelver Yes, it is from Namco, I thought I played it in Taito Memories instead of Namco Museum, but I realized it was the same game as RRR playing the X68000 version recently, it was eerie seeing the similarities.
Looks like the other Mac board is from a Power Mac 6100, which was among the first few PowerPC-based models released. According to www.retrotechnology.com/herbs_stuff/m_nubus.html the riser itself is for the DOS Compatibility Card and the slot may be for the High Performance Video graphics option? I'm getting a sense that different 6100 builds used different slots in that place, with some being NuBus, some being PDS, and possibly some being HPV???? This is rather confusing. The power supply might be compatible with the Centris 610 (which the 6100 follows from).
There were only two risers - the PDS or the Nubus. HPV cards never shipped in the 6100, ever, but as the slot and bus is the same as the 7100 and 8100 machines, you can plug an HPV card in but it may fould the hard disk in the machine. HPV video plugs into the PDS slot, as does the AV Card (which is only a slower 32 bit bus card as opposed to the HPV's 64bit bus). DOS Compatibility cards went in the PDS slot, too.
Adrian, the unknown PowerPC mb is most likely from a 6100 series Mac,I owned one for years and it looked just like it, especially the video connection. Always enjoyable and educational to watch you videos.
When you said 25V programming, reminded me of a programmer I build way way back for an Acorn Atom... it was rudimentary to say the least. It used the user port for the 8 bit data bus and 3 lines from the printer port for counter step, reset and program, with a manual arming switch for VPP. The power supply was also crazy, using a 6-0-6V transformer in a bizarre FULL WAVE RECTIFIER (Electroboom) on 6V with a halfwave doubler on the 12V - based on a circuit I found for adding a negative, turned upside down
36:50 The only fans I ever saw were 3rd party stick-ons to the power supply. It caused noise on the headphone jack line so I put in a switch for the fan so I could have clean audio when I wanted it.
That’s a Powermac 6100 motherboard. The riser card is a PDS (processor direct slot) adapter that allowed plugging in a DOS Compatibility PDS card I believe?
good news: riser card here is not a riser in common sense, but the pds-to-nu-bus adapter for this model, and seems it compatible with a nu-bus dos compability card. bad news: this motherboard is quite useless, because there is no bios simm on it. (www.macgurus.com/products/motherboards/graphics/p6100.gif) update: it have bios but it may be misplaced
@@adriansdigitalbasement It's a bit of a rare beast! ROM 01 was a free "required" upgrade. The Apple Service dealer kept the ROM 00 and disposed of them after the 01 upgrade. I remember some software didn't work without ROM 01 (or 03). I also remember ROM 01 broke some of the first versions of original titles back in the day (Bard's Tale I was one and The Print Shop IIRC) and the titles had to be re-issued.
@Adrian's Digital Basement If you run across an unknown Apple product, check and see if there's an Apple part number and read it out to us, so we can find out what it is. For example, Apple p/n: 820-0242-A would be a Mac iici logic board.
I you have chips sitting in deteriorating black foam, GET THEM OUT OF THERE! If you don't, the pins will corrode and FALL OFF!!! I've lost too many old IC's thanks to this!! There is a kind of antistatic black foam that doesn't deteriorate, and you can't tell the difference until it is too late!! If in doubt, just wrap the parts up in aluminum foil and 86 the foam!! Anti static bags are OK too, but they don't protect the pins from getting bent.
Ok thanks for the tip -- yeah I had some really bad and the foam was stuck to the pins. I had to soak it in 99% IPA for days and they manually brush them. Lots of corrosion on the pins from that.
The bodge on the Rev A timer is correct. The schematic for the reset circuit online however, is not. Took me a few attempts to get the reset line working correctly on mine. FYI, it was in a standard rainbow badge case, so I’m guessing they made a good many of these boards.
Does anyone know if the KU-14194HB C64 PCB has the incorrectly installed resistor that causes the dark video? Can someone post a link to information about what resistor is in question?
My VIC-20 (same motherboard style) does the exact same thing: waits about 30 seconds to a minute for the screen to appear from black. I believe it may be the large capacitor 'warming up' and might benefit from a replacement but I've not tried it yet. I'd be curious if you end up finding out what is causing the long boot time.
The cartridge PCB has hand-drawn tracks. But also solder mask so looks more commercial than hobbiest. The date code on the EPROM might be a clue as to when the cartridge was made.
I've had similar problems using a retrotink (in my case a 2x mini) with my IIgs ROM 01 and ROM 3. For whatever reason the retrotink is unable to decode the color signal from the IIgs despite being able to do a fine job of doing it from the IIe and IIc (and the II/II+ presumably). I've contacted retrotink support, but haven't heard anything back. I would love to find a way to fix this. Adrian - perhaps you have enough influence to get the attention of the retrotink folks?
Don't remember where I got them but I dropped in a few of the switching regulators available in my VIC-20's. They run REALLY cool and seem to work well. I think I got the idea from Chuck H.
33:40 *WATER* is what activate acid to be corrosive. Without water, it doesn't do anything. Somebody once dropped a glass vessel containing concentrated Nitric Acid on linoleum floor, breaking and covering the floor in fuming acid. It just sat there. We went to get stuff to clean it up and then somebody thought it would be a bright idea to dilute it with water. NOOOOO!!!!!!! The moment water hit it, it smoked and ate through the floor. To be fair, this was a story retold by my chemistry teacher decades ago. When you have dried corrosive fluids on your pcb, we can assume it is acidic but you probably should litmus-smear it and then put a drop of water on the litmus paper to test. If acidic, heavily dust it with baking soda, spray a must of water over the area, then scoop some baking soda on top of the area and let it sit an hour. Then put it in a casserole or plastic container to soak a few minute with water and the baking soda you had put on it. *THEN WASH* If you splash some acid on your shirt and it dries and your shirt is fine, it will have a hole when you wash it. Before washing, you need to neutralize the pH first. Corrosion "slowly eats away at the board" due to humidity and presence of acid. This is the primary reason why warehouses have low humidity (below 25%) for preservations of papers and dry foods etc. Papers or metals that have been touched by human hands will have a trace of acid from our skin oils. Edible acids in foods lay inert in low humidity, so that cereal doesn't go rancid.
Clearly you need a spare-parts inventory management system - written for a C64/Vic20 and running from a rom/cardridge similar to how that customer-tracking/service-desk app worked... Then have a dedicated spare parts machine next to the parts bin...
Hehe --- I need to stick to the online version :-) I just need to be better about updating it and then labelling what I have so I can actually find stuff.
Compulator was a custom written software. It is a form of customised CMS. It's not really anything that interesting these days but was a big deal at the time
I was told the 2006 nintendo wii has leaky caps. Which make me wonder if mine still works or not. lol It was actually purchased in Jan 2007. so yeah even if that mac hasn't leaked it could be at risk.
Oh no, I should dig out my original one. I preordered months before release but it arrived about 6 months after release because of the lack of supply. So presumably I have a ~6 month later model.
@@kaitlyn__L I suspect this issue lasted a few years. I heard that 00's caps were horrible. I think they were supposed to get better around 10's. So yeah it sucks and honestly replacing them sounds like a bitch. lol
32:17 the 68882 is the FPU. The MMU is built-into the 68030. (it's a 68851 if memory serve for the 68020). IIci vs IIcx: 25Mhz vs 16Mhz. Also IIci has video out, IIcx needed a Nubus card. 37:11 Steve Jobs was gone by 1985. So it's unlikely he had a say in this. Macintosh was the future.
Yes that's right (math Co-pro and MMU) That was knowledge I haven't needed to use in a very very long time. The same about the IIcx vs IIci difference.
I have found some to be leaking now. I have the same 6100 and the caps in mine were literally falling off the board from cap corrosion so I had to do a full recap. So the first gen PowerPC systems should be checked as they are failing now...
any chance of uploading your DAB Tools for kungfu flash as my kff dont want to work with the ef3 version on your site, also would love to get a copy of the 2 chart rooms to play with
Yeah indeed -- I should be able to tell easily by checking the reset line. I think it's a 555 based circuit so a little drive could have happened with those associated passives
5:29 that's actually Michelangelo not Donatello by the way that's a lot of goodies on that package so keep up with the videos I've been enjoying your content lately
Just when you were discussing the unused fan header on the IIGS mobo and how Steve Jobs would have said: "NO FAN" in a case like that, the AC in the basement kicks in quite in sync! Sorry, Steve...
The VIC20 reset circuit could cause long startup delays if the parts involved are going bad. Regardig the Mac IIci... 68030s don't have internal math coprocessors, but do have MMUs. The 68882 is the math coprocessor.
@@adriansdigitalbasement The 68881 is also a math coprocessor. The 68882 is merely a faster math co-processor. Which is why the 68882 is preferred. A 68020 requires a 68851 MMU to be equivalent to a 68030. The 68030 has the MMU included. The 68040 (and higher) have the FPU and MMU included on the die.
@@adriansdigitalbasement I took a closer look and it appears to be a whole new metal bottom, not just a back plate. I can understand why this upgrade wasn't popular, as there probably wasn't any savings due to the amount of costly parts being replaced.
@@rager-69 yeah that's makes sense. Hardly anything reused. Maybe some schools did it since they might have had locking mechanisms for the IIe to prevent theft.
Is it just me, or is the ZIF-64 the best side character in all the retro channels? I hear the studio audience cheering when it shows up. Side note, if I ever start a business, it's going to use Compulator for CRM.
Steve Jobs had been forced out of Apple following the launch failure of the original Mac in mid-1984, so he should have been long gone when the Apple][gs came out in 1986. There was a whole additional project in between, the Apple][X, Apple's attempt to build something that would have been very much like the MiSTer if it had worked. The only thing that emerged in the form of actual hardware was the MEGA ][ chip, essentially everything but the CPU, RAM and ROM of an Apple][e on a single chip. It was used to provide the ][e support on the ][gs and on the Apple][e add-in board for a few early Mac models.
"Hi... that was done by Bob Scheffler. That might actually be a prototype setup. It was not uncommon for us to use an extension cable like that when working on prototypes because we worn out cartridge ports quite often before we went this route. I don't know how many insertions the C64 cartridge port was good for, but I can tell you after a few hundred times they didn't work reliably and then we were chasing our tails trying to figure out what 'coding' issue existed when one of the address or data lines was not making good contact." He seems to say the visually matching one is a prototype
do enjoy these repairs. No idea why, repairing stuff is something i do and i get annoyed at it if i have to do it for extended periods of time. some how i enjoy watching others do it though.
C'mon Adrian tell me what that little TV is called in your video's, the one that plays Atari anims, C64 and Amiga anims etc etc..3rd ask....Emailed you and asked 3 times...2 sec answer would be nice..
So cool that you show how your pump works. I am always open myself about my medical conditions such as the fact that I had gastric bypass (RNY) in 2017. So good luck to you and I enjoy every video!
A good friend and work colleague of mine has the same medical condition as Adrien. He always went quickly low on sugar while as our work was physically exhausting. Years ago he tried that pump and it was helping him just fine, but I was amazed by the stupidity of other colleagues, who was annoyed by the humming noise of the pump, which I thought was negligible and a really small price to pay compared to the huge advantage of the constantly measuring and regulating of the sugar/insulin level.
Because of stupid comments like "if you wouldn`t eat that much candy, you wouldn't need that annoying pump" and despite I explained l and argued with the possibly mentally retarded colleagues the complaints did not end so he switched back to the common method of measuring and injecting the insulin himself.
Please take that in consideration and the fact, so my friend told, that the first couple of days (and nights) it might annoy you yourself. This is really awesome and much more healthy. 🖖🏻
Adrian I always worry one Wednesday I’m gonna look and not see something from you..based on your previous comments a bit ago😧…I just wanted to say when I look and see something new it makes me smile…I appreciate it thank you man!! But don’t burn yourself out…if you ever did cut back production I would understand…I’m sure you spend more hours than I could imagine doing this…don’t burn yourself out on your hobby!! Anyways appreciate you and love the videos!!
Thanks! I always think I might take a break but then I have another ready. We'll see how it goes in the future :-)
You’re the Bob Ross of vintage tech repair. Been having a tough go lately, and these always help to cheer me up. Thanks for the wholesome and interesting content.
I love how you say "So without further ado, let's get right to it", and then you insert your intro :-)
But that been said, love your channel
Technically he says adieu, the french word for goodbye.
With the VIC-20 missing the regulator, you could install a modern, switching regulator and the machine will run a lot cooler and will only need a small heatsink.
And if the onboard regulator was anywhere near as crappy as the one in the later power brick, it'll be a lot less likely to fry itself than an unmodified unit.
Love it, another box of saved history. Thanks Adrian and Mike!
When the retro hardware just works: "something is wrong, i can fell it"
It's always a bit surprising when things just "work" -- at least when it's a C64 :-)
@@adriansdigitalbasement Ya I repaired that board over a year ago, I replaced the memory chip and the Vic II and the power regulators ... when I got the board the little metal heat sink for the power regulator was stuck in the cart slot :) ... I have 4 other c64s which have 8 pin dins for the video and while I got this one working I couldn't use it because of the 5 pin din so I decided to pass it along and hopefully you will find somebody to love it :)
*feel
And then it works perfectly and you're thinking "this is working fine, something must be wrong".
Hey Adrian, just watched your repair on the IIGS logicboard, but since you have comments disabled there, I'm commenting here.
I really enjoyed it, and learned a few things. The GS was my favourite, well still is my favourite computer. It was my main computer up until about 1996
Anyways, I wanted to mention that by putting the sockets on the Standard RAM area to replace the bad RAM will prevent you from properly seating the front part of the case where the lid hinges in. The added height of the socket will obstruct that panel, so if you want to run that board in the case, you will have to solder the RAM directly on the board.
Also, GS/OS 6.0.2 and 6.0.3 have some bugs. Best to go with 6.0.1 which is the last version released by Apple, or 6.0.4
I hope you will do a retrospective at some point, now that you've had the thought. :)
Reset on Vic 20 is controlled by the 555 timer. Time is determined by the RC value, long reset is due to the cap going bad.
"I need to find a better way to keep track of my parts" Have you heard of the COMPULATOR SOFTWARE?
Back in the 80s and begin of the 90s, that was how you got new software, mouth-by-mouth advertisements. Sage aka KHK was big in Germany after lot of people told you its great. Basically, it was a UI onto Access and super bad, but the best at the time lol
On Commodore, it was most of the time buy and cry tbh. because the software was so bad, but the only one out there, people learned to program their stuff themselves.
Good old times
Great vid. Funny thing about those early 2 prong AC Vic-20s is that you can also use DC voltage directly to the plug and get them to work. Everything will work, even the cassette drive, except some possible user port peripherals that are expecting AC. No idea what those would be. I have heard you can even go as low as 9VDC 2A and you get a cooler running Vic-20 with a working cassette port. I am using a 12VDC 3A adapter for my spare 2 prong Vic-20 and it works great. Cassette loading included. I don't have any user port devices...
The PowerPC board is from a PowerMac 6100 or Performa 61xx series. The riser board lets you put a couple different expansion boards into the 6100: A Nubus adapter board, the AV board, or a 486 DOS Compatibility board. There are also accelerator boards that can replace the riser board to put faster processors into the 6100.
Radar Rat Race is a conversion for Taito's Rally-X, they had to change the graphics and music due to licensing
I thought R-X was Namco. Huh!
@@thedungeondelver Yes, it is from Namco, I thought I played it in Taito Memories instead of Namco Museum, but I realized it was the same game as RRR playing the X68000 version recently, it was eerie seeing the similarities.
Well, you got the compulator cartridge so now you can do inventory control!
HAHA! That is funny -- you're right!
Looks like the other Mac board is from a Power Mac 6100, which was among the first few PowerPC-based models released. According to www.retrotechnology.com/herbs_stuff/m_nubus.html the riser itself is for the DOS Compatibility Card and the slot may be for the High Performance Video graphics option? I'm getting a sense that different 6100 builds used different slots in that place, with some being NuBus, some being PDS, and possibly some being HPV???? This is rather confusing. The power supply might be compatible with the Centris 610 (which the 6100 follows from).
There were only two risers - the PDS or the Nubus. HPV cards never shipped in the 6100, ever, but as the slot and bus is the same as the 7100 and 8100 machines, you can plug an HPV card in but it may fould the hard disk in the machine. HPV video plugs into the PDS slot, as does the AV Card (which is only a slower 32 bit bus card as opposed to the HPV's 64bit bus). DOS Compatibility cards went in the PDS slot, too.
Yep, my first Mac. You can overclock it really easy to 80MHz. Clip on crystal.
Great channel. Amazing that you give away the fixed c64s to the Portland retro community!! Where did you learn to fix all these computers?
Just learned watching TH-cam videos and using logic. It was just maybe 4 years ago I had never touched a C64 -- so I think I've come quite a long way.
@@adriansdigitalbasement That's awesome!!
Awesome video Adrian as per! All the best man
Adrian's videos are addictive!
Adrian, the unknown PowerPC mb is most likely from a 6100 series Mac,I owned one for years and it looked just like it, especially the video connection. Always enjoyable and educational to watch you videos.
When you said 25V programming, reminded me of a programmer I build way way back for an Acorn Atom... it was rudimentary to say the least.
It used the user port for the 8 bit data bus and 3 lines from the printer port for counter step, reset and program, with a manual arming switch for VPP.
The power supply was also crazy, using a 6-0-6V transformer in a bizarre FULL WAVE RECTIFIER (Electroboom) on 6V with a halfwave doubler on the 12V - based on a circuit I found for adding a negative, turned upside down
Electroboom incorrectly calls it a FULL BRIDGE RECTIFIER.
"FOOL BRIDGE RECTIFIER", that's how it sounds to me
Compulator sounds like a CMS (Customer Management System)
Looks like some kind of bespoke software supplied on ROM.
22:54 thanks for showing off the original keyboard diagnostic adapter.
36:50 The only fans I ever saw were 3rd party stick-ons to the power supply. It caused noise on the headphone jack line so I put in a switch for the fan so I could have clean audio when I wanted it.
At 19:30 it appears to be a program for Work Orders & Repairs.
That’s a Powermac 6100 motherboard. The riser card is a PDS (processor direct slot) adapter that allowed plugging in a DOS Compatibility PDS card I believe?
good news: riser card here is not a riser in common sense, but the pds-to-nu-bus adapter for this model, and seems it compatible with a nu-bus dos compability card. bad news: this motherboard is quite useless, because there is no bios simm on it. (www.macgurus.com/products/motherboards/graphics/p6100.gif)
update: it have bios but it may be misplaced
Be sure to take some vacation this summer Adrian, it will do you some good!
1:40 it's one of the original ROM or ROM 01 Revision. All ROM 03 Revisions came with 1.125 mb.
Indeed -- this is a ROM 00 -- so I'll need to make an adapter to use upgrade to ROM 01
@@adriansdigitalbasement It's a bit of a rare beast! ROM 01 was a free "required" upgrade. The Apple Service dealer kept the ROM 00 and disposed of them after the 01 upgrade. I remember some software didn't work without ROM 01 (or 03). I also remember ROM 01 broke some of the first versions of original titles back in the day (Bard's Tale I was one and The Print Shop IIRC) and the titles had to be re-issued.
Looking forward to the IICI video
@Adrian's Digital Basement
If you run across an unknown Apple product, check and see if there's an Apple part number and read it out to us, so we can find out what it is. For example, Apple p/n: 820-0242-A would be a Mac iici logic board.
IIGS and IICI.....what a haul!
I you have chips sitting in deteriorating black foam, GET THEM OUT OF THERE! If you don't, the pins will corrode and FALL OFF!!! I've lost too many old IC's thanks to this!! There is a kind of antistatic black foam that doesn't deteriorate, and you can't tell the difference until it is too late!! If in doubt, just wrap the parts up in aluminum foil and 86 the foam!! Anti static bags are OK too, but they don't protect the pins from getting bent.
Ok thanks for the tip -- yeah I had some really bad and the foam was stuck to the pins. I had to soak it in 99% IPA for days and they manually brush them. Lots of corrosion on the pins from that.
You LUCKY GUY!!! Sooo many spare chips!
I wish I would have 2 or 3 CIAs, so I would be able to repair my brocken C64 😪
Greetings, Doc64!
thanks for the video.. always look forward to them .
Two of my VIC20's took a long to start the first time I powered them up. After that, they seemed to power up in a more reasonable time. No idea why.
The bodge on the Rev A timer is correct. The schematic for the reset circuit online however, is not. Took me a few attempts to get the reset line working correctly on mine. FYI, it was in a standard rainbow badge case, so I’m guessing they made a good many of these boards.
Adrian, it’s impressive how well you can identify the boards so quickly. (TMT, not so much it’s Michelangelo)
Does anyone know if the KU-14194HB C64 PCB has the incorrectly installed resistor that causes the dark video?
Can someone post a link to information about what resistor is in question?
68882 is the math coprocessor and 68030 has a MMU inside (non EC version)
Excellent score and video, always. What is name of your video which shows the incorrect register for dark video?
My VIC-20 (same motherboard style) does the exact same thing: waits about 30 seconds to a minute for the screen to appear from black. I believe it may be the large capacitor 'warming up' and might benefit from a replacement but I've not tried it yet. I'd be curious if you end up finding out what is causing the long boot time.
Long boot time on the VIC-20 is probably a bad capacitor on the 555 reset circuit. Mine had it too. Took 10 seconds to boot untill I swapped the cap.
The cartridge PCB has hand-drawn tracks. But also solder mask so looks more commercial than hobbiest. The date code on the EPROM might be a clue as to when the cartridge was made.
I've had similar problems using a retrotink (in my case a 2x mini) with my IIgs ROM 01 and ROM 3. For whatever reason the retrotink is unable to decode the color signal from the IIgs despite being able to do a fine job of doing it from the IIe and IIc (and the II/II+ presumably). I've contacted retrotink support, but haven't heard anything back. I would love to find a way to fix this. Adrian - perhaps you have enough influence to get the attention of the retrotink folks?
Don't remember where I got them but I dropped in a few of the switching regulators available in my VIC-20's. They run REALLY cool and seem to work well. I think I got the idea from Chuck H.
33:40 *WATER* is what activate acid to be corrosive. Without water, it doesn't do anything. Somebody once dropped a glass vessel containing concentrated Nitric Acid on linoleum floor, breaking and covering the floor in fuming acid. It just sat there. We went to get stuff to clean it up and then somebody thought it would be a bright idea to dilute it with water. NOOOOO!!!!!!! The moment water hit it, it smoked and ate through the floor. To be fair, this was a story retold by my chemistry teacher decades ago. When you have dried corrosive fluids on your pcb, we can assume it is acidic but you probably should litmus-smear it and then put a drop of water on the litmus paper to test. If acidic, heavily dust it with baking soda, spray a must of water over the area, then scoop some baking soda on top of the area and let it sit an hour. Then put it in a casserole or plastic container to soak a few minute with water and the baking soda you had put on it. *THEN WASH*
If you splash some acid on your shirt and it dries and your shirt is fine, it will have a hole when you wash it. Before washing, you need to neutralize the pH first.
Corrosion "slowly eats away at the board" due to humidity and presence of acid. This is the primary reason why warehouses have low humidity (below 25%) for preservations of papers and dry foods etc. Papers or metals that have been touched by human hands will have a trace of acid from our skin oils. Edible acids in foods lay inert in low humidity, so that cereal doesn't go rancid.
Clearly you need a spare-parts inventory management system - written for a C64/Vic20 and running from a rom/cardridge similar to how that customer-tracking/service-desk app worked... Then have a dedicated spare parts machine next to the parts bin...
Hehe --- I need to stick to the online version :-) I just need to be better about updating it and then labelling what I have so I can actually find stuff.
That PowerPC Macintosh logic board looks like a power Macintosh 6100 logic board
E0/2000 is the start of hires video memory.
Interesting as stuff seems to work without issue (like I loaded Total Replay and games) but IIgs stuff seemed to crash.
@@adriansdigitalbasement Well actually I meant super-hires video memory.. the IIgs-specific video modes 320x200 and 640x200.
is it the capacitors needing time to charge up? New caps, quick boot?
Compulator was a custom written software. It is a form of customised CMS. It's not really anything that interesting these days but was a big deal at the time
I was told the 2006 nintendo wii has leaky caps. Which make me wonder if mine still works or not. lol It was actually purchased in Jan 2007. so yeah even if that mac hasn't leaked it could be at risk.
Oh no, I should dig out my original one. I preordered months before release but it arrived about 6 months after release because of the lack of supply. So presumably I have a ~6 month later model.
@@kaitlyn__L I suspect this issue lasted a few years. I heard that 00's caps were horrible. I think they were supposed to get better around 10's. So yeah it sucks and honestly replacing them sounds like a bitch. lol
@@awilliams1701 it does D: I’m good at soldering through-hole components but SMDs are something I’ve steered clear from.
@@kaitlyn__L same
32:17 the 68882 is the FPU. The MMU is built-into the 68030. (it's a 68851 if memory serve for the 68020).
IIci vs IIcx: 25Mhz vs 16Mhz. Also IIci has video out, IIcx needed a Nubus card.
37:11 Steve Jobs was gone by 1985. So it's unlikely he had a say in this. Macintosh was the future.
Yes that's right (math Co-pro and MMU) That was knowledge I haven't needed to use in a very very long time. The same about the IIcx vs IIci difference.
Do you place a diskkete on a pc power supply? Electromagnetic waves will damage the disk, right?
Thanks for your videos, but I hope you are with all of the unruliness that is taking place in your downtown staying safe.
"nope, no fan"
No shame in that, either. It's HOT!
Certainly a haul of ICs there, should keep things going for a while... :D
I've been highly-pixelated Rick Rolled
31:35 Yes I've found the caps on these late 1990s Macs haven't yet leaked like previous on Macs (but they will hahaa)
I have found some to be leaking now. I have the same 6100 and the caps in mine were literally falling off the board from cap corrosion so I had to do a full recap. So the first gen PowerPC systems should be checked as they are failing now...
any chance of uploading your DAB Tools for kungfu flash as my kff dont want to work with the ef3 version on your site, also would love to get a copy of the 2 chart rooms to play with
ON the VIC 20 Long start time.. This could be a problem with the On power reset circuit.
I thought about measuring the ground resistance, maybe a leak somewhere?
Yeah indeed -- I should be able to tell easily by checking the reset line. I think it's a 555 based circuit so a little drive could have happened with those associated passives
5:29 that's actually Michelangelo not Donatello by the way that's a lot of goodies on that package so keep up with the videos I've been enjoying your content lately
great now i can only remember Michelangelo and Raphael...
Leonardo!
And Mike is also the name of sender.
@@knight_ki11er so there was a meaning.
Just when you were discussing the unused fan header on the IIGS mobo and how Steve Jobs would have said: "NO FAN" in a case like that, the AC in the basement kicks in quite in sync! Sorry, Steve...
Must be an active cooling fan. :-D
Steve Jobs didn't need fans in his computers, he already had enough fanboys...
@@SenileOtaku GO TO YOUR ROOM.
The VIC20 reset circuit could cause long startup delays if the parts involved are going bad.
Regardig the Mac IIci... 68030s don't have internal math coprocessors, but do have MMUs. The 68882 is the math coprocessor.
OH right!!! Thank you for that -- brain fade LOL! Wasn't there an external MMU for the 68020? 68881?
@@adriansdigitalbasement The 68881 is also a math coprocessor. The 68882 is merely a faster math co-processor. Which is why the 68882 is preferred.
A 68020 requires a 68851 MMU to be equivalent to a 68030. The 68030 has the MMU included.
The 68040 (and higher) have the FPU and MMU included on the die.
Is someone going to create a FPGA replacement for the MOS VIC-20 chip as well as a MOS VIC II chip for the C64 and C128.
Just used deoxIt on my cat stereo eq!! AMAZING THANK U
That’s an odd name for a cat.
I have an Apple IIe that was upgraded to a IIgs and it does indeed have a different backplate (and nameplate/badge).
Neat probably 100% impossible to find now-a-days. Wonder if there is a STL file around to 3D print a new one?
@@adriansdigitalbasement I took a closer look and it appears to be a whole new metal bottom, not just a back plate. I can understand why this upgrade wasn't popular, as there probably wasn't any savings due to the amount of costly parts being replaced.
@@rager-69 yeah that's makes sense. Hardly anything reused. Maybe some schools did it since they might have had locking mechanisms for the IIe to prevent theft.
I wonder if robin from 8 bit show and tell could shed some light on the c64 database cart
Two of the three Z80s look to like they are serial I/O controllers, not actual Z80 CPUs.
Sticker on that PowerMac board seems to indicate it’s one of the 6100 models.
Is it just me, or is the ZIF-64 the best side character in all the retro channels? I hear the studio audience cheering when it shows up. Side note, if I ever start a business, it's going to use Compulator for CRM.
check vic20 PG
eset line. PSU must generate one of them
IIGS fans had an option for a fan if you wanted to add more cards.
Another good PSU for a GS is one out of a LC 475 as its pin out is the same
can you turn that power pc into a Amiga compatible ?
I think it can run that MorphOS which is "amiga-like"
25:20 some strange looking chords
Out of tune, or not, it's still such a childhood memory playing Radar Rat Race with the super repetitive music
You should make that VIC-20 board run off USB for fun! 5 volt with a bit over 1 amp is almost the same current provided by base USB hahaha
Yeah any old 2amp PSU should go perfectly good for it. People might think it's something with a Raspberry Pi inside :-)
Why didn't COMMODORE not use die cast metal cases for COMMODORE C64s.
That C64 CRM was weird.
Steve Jobs had been forced out of Apple following the launch failure of the original Mac in mid-1984, so he should have been long gone when the Apple][gs came out in 1986. There was a whole additional project in between, the Apple][X, Apple's attempt to build something that would have been very much like the MiSTer if it had worked. The only thing that emerged in the form of actual hardware was the MEGA ][ chip, essentially everything but the CPU, RAM and ROM of an Apple][e on a single chip. It was used to provide the ][e support on the ][gs and on the Apple][e add-in board for a few early Mac models.
On to year 2 of MMMC!
I did not even realize that!!!!!
I see Rammy!
Hey id love to have your mac motherboard I have a great collection of retro macs going from that generation.
0:35 that's not a knife. This is a knife!
apple 11e platinum had num keypad i think
Yeah I just wasn't sure if that had a separate connector?
5:33 that's Michelangelo
I thought it was risky to rest your left hand with the watch buckle on the boards..
My dad has one of those insulin pumps
For more info on the superload cartridge see atariage.com/forums/topic/223897-what-is-this-for-my-commodore/
Ah interesting -- so I may have the only dump of that EPROM around? (Well on Archive.org now)
"Hi... that was done by Bob Scheffler. That might actually be a prototype setup. It was not uncommon for us to use an extension cable like that when working on prototypes because we worn out cartridge ports quite often before we went this route. I don't know how many insertions the C64 cartridge port was good for, but I can tell you after a few hundred times they didn't work reliably and then we were chasing our tails trying to figure out what 'coding' issue existed when one of the address or data lines was not making good contact."
He seems to say the visually matching one is a prototype
@13:12 .... CRANK IT!
I thought Midweek Mailcalls were ending... Maybe I hallucinated that episode..
I did say that -- but I keep making them -- we'll see what I decide. It'll be a surprise when I do :-)
@@adriansdigitalbasement Don't get me wrong, in glad you didn't stop :)
do enjoy these repairs. No idea why, repairing stuff is something i do and i get annoyed at it if i have to do it for extended periods of time.
some how i enjoy watching others do it though.
We want to see you stock take. ;)
oh Archon was great!
Ohhhhh well if there's a c64 layin around you don't need!.......... LOL
I see you've played knifey penny before
C'mon Adrian tell me what that little TV is called in your video's, the one that plays Atari anims, C64 and Amiga anims etc etc..3rd ask....Emailed you and asked 3 times...2 sec answer would be nice..
Apparently, the Apple III should've had a fan but Jobs said no.
@@squirlmy I don't think Woz left that soon after Apple III, since he had a hand in designing the IIgs.
I thought you said “Copulator”!
Nice and early! :-)