On Tue, 18 Jun 2019 05:24:04 +0000 dwight <dkel...@hotmail.com> wrote:
> Hi Lyle > What is a 88/45? I look up the 310 systems on the web but none > mention 88/45. Good catch, Dwight! It was a typo. I have two 88/45 boards and don't need more. FYI, here's a link describing the 88/45: http://bit.ly/2N6zKGe Here's the description of the iSBC 88/30 that I NEED in the maintenance manual for the System 310: http://bit.ly/2MWMij5 > Is the PAL for address decoding or something more complicated? Not sure. Likely for address decoding but I haven't tracked down what else it might do. Another System 310 restorer had the identical symptoms and issues with his 310. To be more specific: The system begins startup and then halts (run light off) after about a second of running. The hardware manuals says that error is either an iSBC error or DMA hanging the system. I pulled all the DMA I/O cards from the system to make sure it wasn't DMA... Repeating the CORRECTION: I NEED AN iSBC 88/30!!! Thanks again, Dwight!!! Cheers, Lyle ______________________________ > From: cctalk <cctalk-boun...@classiccmp.org> on behalf of Lyle > Bickley via cctalk <cctalk@classiccmp.org> Sent: Monday, June 17, > 2019 1:39 PM To: cctalk@classiccmp.org > Subject: Looking for a Intel multibus 88/45... (minor corrections...) > > I'm in the process of restoring an Intel 310 system. I had it working > to the point where it was trying to boot - when the 88/45 processor > began to fail intermittently and then solidly. My debugging seems to > indicate that the problem is in a PLD - which is a serious bummer. > > I have preserved the ROMS (which have built-in diagnostics/debugging > and boot capability for both floppy and Winchester hard disks) as > files. I will make these ROM files available to Al for posting on > bitsavers. > > If someone on this list has an Intel 88/45 (or Intel 310) who would be > willing to part with it, please contact me off list. I can to either > do a trade or cash purchase... > > Cheers, > Lyle > > -- > 73 NM6Y > Bickley Consulting West Inc. > https://bickleywest.com > > "Black holes are where God is dividing by zero" -- 73 NM6Y Bickley Consulting West Inc. https://bickleywest.com "Black holes are where God is dividing by zero"