Re: Card Questions (Mouse, RWIII)

[Randy Shackelford <shack@onyx.southwind.net>]

Galen Tatsuo Komatsu <gkomatsu@hawaii.edu> wrote:
: First, was the EPROM problem with the mouse cards ever addressed?
: Rather, anyone here offer the service of reburning the EPROM?  I
: probably won't make use of it, but I may be giving away the card
: soon and I'd like to at least have someone I can refer the person to.

What EPROM problem is that? The only defect on the cards I ever heard of
is that early cards have a 74C245 chip and later ones use a 74LS245.

: And second, I recently got a couple of 286 boards, extracted the
: memory from them and filled the remaining sockets for my RAMWorksIII
: board.  I ran the Prodrive software for the RWIII.  It created a
: /RAM disk 896k in size.  So I'm wondering, where's the other 128k?

Yep I used that trick to fill every memory card on hand. As far as the RAM 
disk software goes, AE's sucks. You can get a much better one as part of
the 8 bit Prosel package. That is as long as it's still obtainable. There's
even a version that can use a 65802 or 65816 if you have one.

: Also, does it matter the speeds of the memory chips used?  There's
: three different flavors of chips on the card now.  Things are as
: follows:
:              _______________________________________
:       ___---|   '   '   '   '   '   '   '   |   '   |
:  ___---     | KM41256AP-12  933M KOREA      |       |
: |           |---+---+---+---+---+---+---+---|   +   +---
: |           |   (same as above)             | ICM 41256-10 BRASIL
: |           |---+---+---+---+---+---+---+---|   +   +   |  8819B
: |           | HM50256P-15 U100522 JAPAN 8534|           |
: |___________|___,___,___,___,___,___,___,___|___,___,___|
:      ||||||||||||
: The Korean chips came with the card, the Japan and Brasil ones came
: off the 286 motherboards.

It only takes 150 ns chips, so no worry there.
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