The card should be oriented with the chips facing the power supply. Also, it must go in the slot furthest from the power supply if it is supposed to be a system rom/language card. Apple II architecture does not allow you to plug any card into any slot. Specific types of cards have to go in specific slots.
It is easy to figure out how the ROM card needs to be inserted. On the EPROMs pin 12 or 14, depending on how many pins 24 or 28 the EPROM has,is always ground. So plug it in and check if pin 12 of is connected to the ground of the pcb. If not turn it around. If you plugged it in the wrong way the EPROMs are probably fried. The little white connector is probably for a speaker. It is labeled SP. The floppy drive is from IBM PC 5150 or XT 5160. I just repaired one today from my own 5160.
Agree with another commenter that you need to find the ground or VCC pins on the EPROM chips and use an ohm meter to check continuity to ground or VCC on the motherboard with the EPROM board plugged into the bus. Even if this board is different from actual Apple 2 boards in the orientation of expansion boards in the bus (or possibly even the orientation of the bus slots on the motherboard) this method will tell you the correct orientation of the boards in the slots.
Thanks! I already updated the video title based on your find. I didn't think the image search would come up with something. Seems to be very rare. Barely no info online.
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The card should be oriented with the chips facing the power supply. Also, it must go in the slot furthest from the power supply if it is supposed to be a system rom/language card. Apple II architecture does not allow you to plug any card into any slot. Specific types of cards have to go in specific slots.
Thanks!
It is easy to figure out how the ROM card needs to be inserted. On the EPROMs pin 12 or 14, depending on how many pins 24 or 28 the EPROM has,is always ground. So plug it in and check if pin 12 of is connected to the ground of the pcb. If not turn it around.
If you plugged it in the wrong way the EPROMs are probably fried.
The little white connector is probably for a speaker. It is labeled SP.
The floppy drive is from IBM PC 5150 or XT 5160. I just repaired one today from my own 5160.
This 👍🏻
Thanks!
Agree with another commenter that you need to find the ground or VCC pins on the EPROM chips and use an ohm meter to check continuity to ground or VCC on the motherboard with the EPROM board plugged into the bus. Even if this board is different from actual Apple 2 boards in the orientation of expansion boards in the bus (or possibly even the orientation of the bus slots on the motherboard) this method will tell you the correct orientation of the boards in the slots.
Thanks!
Apple cards usually (everyone I've seen actually) go with the overhanging side to the front and which means board facing left and chips facing right.
Thanks!
Ah FGS, I had one of those boards ages ago but no ROM card so it did nothing, I wonder what I did with it, if it's still in my pile of junk.
A quick google image search suggests this is the Staff C1 Apple 2 clone. Interesting!
Thanks! I already updated the video title based on your find. I didn't think the image search would come up with something. Seems to be very rare. Barely no info online.
this looks really cool ...i want you to fix it wolfgang...
Your Discord invite link in your description is expired
Fixed! New Link is in the description.
Enjoy your channel and obscure finds but I'am no help what so ever
😂Thanks for watching!!!!