Re: Card Questions (Mouse, RWIII)

[W Stewart <waynes@intergate.bc.ca>]

Missed the original EPROM question so I can't comment

896 k is odd. Using Prodrive v1.2, Prodrive itself says I have a 960mb
ramdisk. Prodrive leaves 64k of auxiliary RAM otherwise a lot of
programs wouldn't run. Now the question is why you're minus 64k.

The RamWorks III needs 200 ns or faster chips. As long as they're
fast enough you'll never be able to see any difference whether they're
mixed or all fast or all slow. A few years ago when 256k chips were
pricey and hard to find used, I put in whatever I could find. I recall I
had one bank where almost every chip was a different speed and it
worked fine. Later when more chips were available I made them all
the same, however I couldn't see any difference.

          Wayne


Galen Tatsuo Komatsu 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.
>
> 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?
>
> 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.
>
> --- These people owe me stuff, over a year past due ---
> Josh Smith (aka "itsme")   :  $17.00 + various specified videogame items
>      (http://www2.hawaii.edu/~gkomatsu/JSmith/js.html)
> Ben Cureton ("tragic")     :  $85.00