Re: TransWarp GS Upgrade Guide - Updated

["mr. brad" <mrbrad@ll.net>]

the version C card is long ...looks like a standard //e card to fit in the 
case with the diag cutoff at end of card for lid

the rev D card is basically the size of a disk ii controller maybe a bit 
longer...and is square more or less

you can get the latest rev ROMs for either card (or could)
specify C or D version..but other then that not sure
of diff

the 14mhz upgrade i did like 15 yrs ago and ran the lost gonzo bbs 24/7 via 
worldgroup bbs and telnet (1991 to 2005) as a rev
C card or the older version....i heard that rev C cards were more 
robust...the D card is more advanced smaller circuitry

the only thing i had to do to keep it stable at 14mhz was i pop'd the lid 
off the //gs upgrade

anyway this info prob? is in ap2 FAQ's or should be

the one i ran for yrs still works it also had (maybe needed to have can't 
remember) the 32k daughterboard addition
and you had to cut traces on back to make the mod with the proper 16mhz? wdc 
chip replacement

needless to say..i have 2 other rev D more modern cards..even thou i have 
the wdc chips was never brave enough to tempt fate twice (note: I THINK i 
should have heated the exacto knife before trying to cut the fine 
traces..very scary xacto knife skipping across back of twgs board....dance 
around swear....put it back in relief ...worked...do it again same 
result..dance around swear.....see if it works...on the 3rd try i managed to 
do it...and it ran at 14mhz..i  swore never to do it again...my biggest 1/2 
hr pain in the butt apple scare i ever had..)

anyway..that pretty much exhasts my computer "mod'ing" experience...

brad
former sysop lost gonzo bbs






"Henry S. Courbis" <apl2research(a.t.)comcast.net> wrote in message 
fKmdncl9FI-2clPanZ2dnUVZ_hynnZ2d@comcast.com">news:fKmdncl9FI-2clPanZ2dnUVZ_hynnZ2d@comcast.com...
> Hello mr. brad.
>
>> does this upgrade work for version C cards or only the D versions
>
> Wow!  I've been staring at these TWGS boards for several years now and I 
> never noticed any revision information other then the production dates on 
> the back of the card (1989 to 90) and the hand written dates (1989 to 91). 
> Are those what you are referring to?
>
> As far a 'C' or 'D' versions of the card, I'm lost.  Of course it wouldn't 
> be the first time I missed something either.  Can you elaborate?
>
> Thanks!
>
>
> -- 
> Henry S. Courbis
> www.ReactiveMicro.com
> Legacy Hardware and Support - Come take a look at what we have to offer!
>