RAMCAL design options

[Stuart Bunning]

Option #3 can i have 2387238 of them
yummie very excited..
I'v got some fancy eprom programmers at work
i will see if i can in the programming department.



>
>Ludis Langens wrote:
>
>> Several of you expressed interest in a MEMCAL with ECM writeable RAM.
>> I'm calling this a RAMCAL.  See a previous message for an architectural
>> overview of how custom software in the ECM could write to RAM without a
>> ~WE signal.  Below are notes for three different implementations of a
>> RAMCAL.  They work in ECMs using MEMCALs with 27128, 27256, or 27512
>> type EPROMs.  The ROM mentioned in the designs refers to the EPROM in
>> the MEMCAL (which is plugged into the RAMCAL's back and used to boot the
>> ECM.)  All three designs are intended to use a 128Kbyte SRAM.  A 64KByte
>> RAM would suffice, but the larger RAMs are cheaper and more common.
>>
>> So, Yea or Nay?
>>
>> --
>> Ludis Langens                               ludis (at) cruzers (dot) com
>> Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/
> 

Stuart 
Australia
1 * 1988 VN Commodore Buick 3.8l V6 (Aussie GM Vehicle 808)
1 * 1976 Chrysler Charger 4.3l Hemi 6 with DELCO P4 808
1 * Bench ECU for testing and playing 808

Email: stuart at kenelec.com.au
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