My error Gary, the V1.49 is the most up to date version I have been using. Most recent changes are just for PM testing BTW. The core 8086 stuff really has not changed in a while.
I stuck in hardware currently. Could you carefully checkout the 80386 switching code. I seem to remember I used the old and new ways to switch TMA 0 line. Only the output mode will work for the SMB V2. With a logic probe see if you are getting signals. John On Monday, February 2, 2015 at 8:52:34 AM UTC-8, Gary Kaufman wrote: > Thanks for checking, I'll try tonight when I get home from work. > > I believe I've tried both with 1-2 and 1-2,3-4 jumpered. I've also tried > direct port access to EDh and EEh. > > The latest monitor I could find on your site was V1.49 > > - Gary > > On Monday, February 2, 2015 at 11:34:53 AM UTC-5, monahanz wrote: >> >> Gary, just checked my board. I can get back to Z80 from 80386 monitor >> (V1.84) with the “Z” command if the P36 jumper is in 1-2 position. However >> NOT SO if it’s in 2-3 position. The latter is utilizing the SMB V2 to >> pull down TMA1 rather than the 80386 onboard port. I will look into it, >> but meanwhile check software for both CPU’s. I bet there is a conflict with >> either the (old) IN Port option to switch CPU’s or the newer Output a bit >> method. >> >> >> >> John >> >> >> >> >> >> *From:* [email protected] [mailto:[email protected]] *On >> Behalf Of *Gary Kaufman >> *Sent:* Monday, February 2, 2015 5:27 AM >> *To:* [email protected] >> *Subject:* [N8VEM-S100:6179] Re: 80386 CPU Board >> >> >> >> David and John - >> >> I've read thru the '386 page dozens of times! >> >> I have the SMB and can switch to the '386 board thru QIED, or output >> QOEE,01. Also the "W" and "O" commands both work. Unfortunately when I >> use "Z" to return the system hangs. >> I can go back to the Z80 from the 6502, 8088 or 80286 boards fine. >> I have P36 with 1-2 and 3-4 jumpered. >> >> I do think it's likely a jumpering issue, but I'll also swap out all of >> the 74LS74's again once my Mouser order arrives. I've had a few flakey >> ones recently. >> >> - Gary >> >> On Sunday, February 1, 2015 at 11:02:55 PM UTC-5, monahanz wrote: >> >> Gary I have written up a few notes/tricks on hardware debugging these >> types of CPU boards:- >> >> see here:- >> >> http://s100computers.com/My%20System%20Pages/80386%20Board/80386%20CPU%20Board.htm#80386_Debugging >> . >> >> >> >> John >> >> >> >> >> >> >> On Sunday, February 1, 2015 at 8:24:54 AM UTC-8, Gary Kaufman wrote: >> >> I completed the 80386 board yesterday, and after some confusion (on my >> part) getting the monitor configured and jumpered correctly on the >> MS-DOS support board it's running nicely at 32mhz using an AMD 80386-33 >> chip. >> >> I'm running into two issues, and wonder if anyone has encountered them. >> >> When I try to return to the Z80 using the "Z" command it hangs. >> >> I've tried using a TX486DLC/E-33GA but it hangs after printing the >> initial monitor prompt (at both 16 and 32mhz). >> >> Thanks! >> >> - Gary >> >> -- >> You received this message because you are subscribed to the Google Groups >> "N8VEM-S100" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
