Revive 11/34

On 12/8/2017 3:50 PM, Jerry Weiss wrote: > On Dec 8, 2017, at 2:25 PM, John Welch via cctech <cctech at classiccmp.org> > wrote: > >> I am reviving an 11/34. Cards are: >> >> Back/Fans [M8266--------] Front of machine where keypad is. >> [M8265--------] >> [M9312] [M7859] >> [M7762--------] >> [OPEN] [M7860] >> [M7840--------] >> Bus grant in third from front slot >> [M9302] [M7856] >> The 7856 is hooked to a cable/null modem (i think)/PC running XP&Hyperterminal >> >> When I first powered on the programmers console said '7' and I powered off, then back on, and now it says '5' >> >> Any suggestions as to what to try first? I may have the bus grant in backwards. I have other boards I can try. >> >> Sincerely, >> John Welch >> :qw >> > > 1) The G727A bus grant card is keyed (somewhat). It should be in Row D (fourth from the back) > It won?t seat evenly if reversed. At least that is what my scraped knuckles remember. > > You can temporarily pull it out to finish the check out. There?s nothing past the > M7840 that requires DMA.

On Dec 8, 2017, at 5:26 PM, John Welch via cctech <cctech at classiccmp.org> wrote: Update: This is the map of the machine: ........................ AAA BBB CCC DDD EEE FFF .................... (Rear/Fans/Power Supply) 1 [M8266----------------] (Front/Keypad/DC ON) ........................ 2 [M8265----------------] .................... ........................ 3 [M9312] [M7859--------] .................... ........................ 4 [M7891----------------] .................... ........................ 5 [M7762----------------] .................... ........................ 6 [M7860--------] .................... ........................ 7 [M7840----------------] .................... ........................ 8 GNT .................... ........................ 9 [M9302] [M7856--------] .................... ........................ AAA BBB CCC DDD EEE FFF .................... Reseating the ribbon cable on the M7859 changed the display. I have replaced the M7840 with a G7273. Now when I power on it says (dim)0, (bright)0, blank, (dim)0, blank, blank. I have reseated the M7859, I don't think I have another one. Maybe I should hit it with a vacuum. I had forgotten about needing to cut a wire for DMA. Can you give me a refresher on how to tell which slots are cut? I remember having to turn the chassis over and looking for a particular wire but that was >15 years ago.

On Dec 8, 2017, at 5:49 PM, John Welch <jcwelch at hal-pc.org> wrote: I also have an 11/04 that I went and drug out. It is configured like this: 11/04: ........................ AAA BBB CCC DDD EEE FFF .................... (Rear/Fans/Power Supply) 1 [M7263----------------] (Front/Keypad/DC ON) ........................ 2 [M7847----------------] .................... ........................ 3 [M7859--------] .................... ........................ 4 [M7847----------------] .................... ........................ 5 GNT .................... ........................ 6 [M7762----------------] .................... ........................ 7 [M7840----------------] .................... ........................ 8 [DILOG--------] .................... ........................ 9 {nothing} .................... ........................ AAA BBB CCC DDD EEE FFF .................... I am thinking I could put a M9203/M7856 into slot 9, and find a M9312 for slot 3 and maybe this would fire up. Any suggestions?