(Introduction - problem starts after 2nd paragraph if you would like to skip this)
I am new here and am working on repairing/restoring an old apple ii plus that was gifted to me as a kid for something to play with that didn't work. Amazingly, my childhood self managed to not break anything more or touch the ICs. I was in school for computer engineering, but have been away for a few years due to health problems. So while I have a break for a few weeks from doctors while they come up with a new plan, I decided to keep busy as much as I am able to.
I got the system working, and so far have been able to find authentic parts other then two logic chips (an AND gate and an octal buffer). Those I had to replace with new modern day versions of the ICs. Not sure if this decreases the overall value of something like this? I also have the original integer ROMs and Programmers aid, which I verified on a ROM burner using a converter board I made to go to the M2716 EPROM ICs. These seem to be working in the ROM card I have now that I fixed the logic gates that were dead. The Integer basic boots and I ran a few quick program lines and it seems to be functioning. It appears to me that someone plugged something into one of the card slots that was bad and it took out parts on all the cards and a few parts on the motherboard. I have a language card that I am working on getting together and a joystick.
So now my questions and the problem.
1) If I recall the language card needs to go in slot one so it can't be used with the ROM card. Is there any way around this? If this isn't a simple answer then I would be willing to do some research myself if someone could point me in a good direction.
2)Are there other ROMs that work with the ROM card other then the Integer Basic ROMs. You don't need to list them here, but maybe point me in a good direction to look.
3)I just wanted to verify the order for disk drives that I found while doing research. I appears that you can install up to 6 drives by using slots 6, 5, and 4 in descending order. I assume the computer will still always use slot 6, drive one as the drive to boot from with autoStart? Can you mix and match 13 and 16 sector cards?
4)Anyone have any good websites to find parts for the apple II+ on? Or any place to get time period correct parts such as the logic chips I mentioned earlier (an AND gate and an octal buffer)? Right now I am using Mouser, Digi-Key, and Newark for most orders including other projects, but these are obviously not time period correct parts.
5)Anyone know of any good resource that lists/shows all the possible expansion cards available for these (and their purpose) back when they were mainstream? There are a few I was curious about.
So the problem I have is that about half or more of the disks I have require the 13 sector PROMs for P5 and P6 (I believe 341-0009 and 341-0010) to be readable. I don't have a disk card with these. I only have the 16 sector ones. I am working on getting a Franklin disk card controller which should let me read these, since it can switch from 13 to 16 sector modes. That said I would really like to get my hands on the original PROMs. The computer had these originally, but these were in a box of spare parts that came with the computer and the pins were almost all torn off (it looked like someone tried to piggy back it to a 16 sector ROM and messed up). Below are my questions about this.
1)Does anyone have any of the original 13 sector PROMs they would be willing to part with?
2)Does the Franklin card go in slot 6 and replace the disk ii card?
3)I found a few blank (I think) TBP28L22N ICs. I believe these are the same chip used in the original apple ii plus disk ii cards for the PROMS. I know it wouldn't have the apple copyright or ROM code stamp, but at least it would function correctly and be the correct original IC. If I sent these to someone could they burn the binary files into them for me? The ROM burner I have doesn't support this IC, and right now buying a new ROM burner isn't really an option.
4)I seem to recall there was a way to make the DOS 3.3 16 sector software that was on the floppy read the 13 sector discs and run them. I can't seem to remember how to do this though. If anyone could help me here or point me to a resource that would be awesome. I would like to rule out bad floppies too and it would be nice to see what is on these in the meantime.
5) In research I think I saw that you could piggy back the 13 and 16 sector PROMs with a switch on their enable pins in order to allow the same card to read both types of floppies as long as it was switched when the system was off?
Lastly, as a side note. If anyone has any extra disk ii floppy drive cables, I could use one if the price is right. (One of my two drives has a bad cable)
I greatly appreciate any help anyone here can give, as well as your time in reading through this post. Thank you in advance.