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Author Topic: Let me present the A3660  (Read 8744 times)

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Offline mechy

Re: Let me present the A3660
« on: October 30, 2017, 03:06:13 AM »
Excellent work Chucky. Integrating the 060 on the 3640 is a huge improvement and some nice changes to boot!  If only there was an easy way around the custom rom fix.
 

Offline mechy

Re: Let me present the A3660
« Reply #1 on: January 29, 2021, 11:42:19 PM »
Anyone test these things in an A4000T (esoteric I know)...it seems they're incompatible with NCR SCSI.device and no way of sidloading it seems to work (GURU 8000 0004 I think...but the system boot loops)

yes i have 3 of them. one worked at 50mhz in the 4000T
one worked with 55mhz in the 4000T,but not at 50Mhz or 60mhz.
one didnt work at all in the A4000T at any speed.
All 3 work flawless in the 4000D
my only guess and this is only a guess,is when chucky reverse engineered the pcb he changed a few traces around here and there and it throws off the picky 4000T timing somehow?
These cards are also hit and miss in 3000D's
Not sure if this was ever solved or new revision of the 3660 came out etc.
Are you sure its a problem with the scsi?  If so it seems maybe you could install 4000D roms in the tower and try that?
4000t's are notorious for bad caps also. might be a good idea to recap if it hasnt been.