On Thu, Nov 14, 2019 at 7:17 AM Jay Jaeger via cctalk <cctalk@classiccmp.org> wrote:
> The iSBC 202 is actually two boards: a controller, PSA 1000467 and a > interface board PWA 1001036. > > There are 4 PROMS on the controller/channel board, intel D3604 (512x8), > labelled A10: 52-722, A11: 52-729, A12: 52-741 and A13: 52-735 . I > presume these are what you are looking for. > I've just sent F.Ulivi a tarball with the PROM dumps I have from both the SBC 202 and SBC 201, which are the double-density (M2FM, Intel proprietary format) and single-density (FM, IBM standard format) controllers, respectively. They use the same channel controller board but different firmware and different interface boards. The 52-nnn and 91-nnnnn part numbers are the ordering part numbers for service parts for the Intel development systems. The PROMs also have a "pattern number" which is unique only with regard to the PROM type (Intel 3604/3604A). There are other versions in existence, but these are what I have: ctlr posn p/n pattern ---- ---- -------- ------- 201 A10 52-606 0236 201 A11 52-607 0237 201 A12 52-608 0238 201 A13 52-633 0239 202 A10 52-722 0230 202 A11 91-00277 0261 (this may be a newer version of 52-741, which may have been pattern 0231) 202 A12 52-741 0233 202 A13 52-735 0232 Best regards, Eric
