Whats a ROM card?
Matthew S. Carpenter
I was going through all the things I got with My IIGS, and I opened up
this one box, and found a card and what looks like a bunch of chips that I
guess you're supposed to interchange on the card. The card is labeled as a
"ROM CARD", it was made by Apple Computer. I'd say its quite a bit older
than the IIGS though, it has a copyright date of 1978.
Here are some pictures.
The card and everything ells that was in the box:
http://homepage.mac.com/msc1983/.Pictures/Apple%20ROM%20CARD/DSC00020.JPG
Set of chips:
http://homepage.mac.com/msc1983/.Pictures/Apple%20ROM%20CARD/DSC00018.JPG
Two more chips:
http://homepage.mac.com/msc1983/.Pictures/Apple%20ROM%20CARD/DSC00019.JPG
Zoom in on lower left hand corner of the card:
http://homepage.mac.com/msc1983/.Pictures/Apple%20ROM%20CARD/DSC00017.JPG
I'm just wondering what this card might have been used for.
--
-MSC
AIM: MSC1983MSC
ICQ: 42442595
msc...@mac.com
msc...@home.com
psych...@hotmail.com
Charlie
"Matthew S. Carpenter" <msc...@mac.com> wrote in message
news:B785E5D3.9ECB%msc...@mac.com...
> Hello,
>
> I was going through all the things I got with My IIGS, and I opened up
> this one box, and found a card and what looks like a bunch of chips that I
> guess you're supposed to interchange on the card. The card is labeled as
a
> "ROM CARD", it was made by Apple Computer. I'd say its quite a bit older
> than the IIGS though, it has a copyright date of 1978.
>
> Here are some pictures.
>
Plug it into slot 0 on an Apple ][ or an Apple ][+ and by flipping the
switch on the back (which conveniently sticks through the hole on the back)
you can switch between the motherboard ROMs and the ROMs on the card.
The ROMs map into memory from $D000 to $FFFF so the six labeled chips (D0 to
F8) are another set of ROMs for the card. The two chips with round windows
are EPROMs that may have been burned for some custom use.
I had one of these cards for my Apple ][+ back in 1980. It had the Integer
BASIC, Programmer's Aid, and old monitor ROMs on it. It would work in slot
4 (and maybe other slots) but with some limitations.
Mine wouldn't work in my Apple IIgs ROM 01.
Charlie
Paul R. Santa-Maria
> I was going through all the things I got with My IIGS, and I opened up
> this one box, and found a card and what looks like a bunch of chips that I
> guess you're supposed to interchange on the card. The card is labeled as
a
> "ROM CARD", it was made by Apple Computer. I'd say its quite a bit older
> than the IIGS though, it has a copyright date of 1978.
Everything Charlie said is true.
The Apple II, II+, and the ROM card used ROMs that are incompatible with the
2732 series of EPROMs, which is what the others seem to be, unless you
modify the ROM card. In other words, be wary about plugging in the spare
ROMs you have into the ROM card.
The "Inspector" ROM is a third-party add-on that went into the empty $D800
socket and provided you with a set of disk sector read/write tools for DOS
3.2 and DOS 3.3. There was a companion ROM called "Watson, the Inspector's
Assistant" that replaced the Programmer's Aid #1 ROM at $D000.
Paul R. Santa-Maria
Monroe, Michigan USA