MYIDE will not run on 8080/8085. On 2.2 It should be OK I think, if not only minor console I/O mods required.
John
From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of Jeff Albrecht
Sent: Monday, July 13, 2015 6:41 PM
To: n8vem...@googlegroups.com
Subject: [N8VEM-S100:7393] Re: V3 Dual IDE/CF S100 Bus board initial checks
Had some time to work with my v.3 IDE/CF card today after completing assembly.
My first experiments were using Josh's JAIR board. However I believe the JAIR uses, by default, I/O ports at 030h which is where my GAL was burnt for me by Gary. I get the signon message and initializing then locks up.
I have a CompuPro system running 8" FDDs with an 8085 / 88 card. Same results hangs after signon / initializing message. Interestingly SURVEY.COM locks up on the CompuPro after not displaying port 030h that I believe the IDE/CF is configured for. Note test I ran at beginning of this thread seems to indicate GAL is responding to port 030h.
I did install the 1k pullup R118. For U110 I used DM74S04N. I tried with reset empty and on the right most two pins.
Any suggestions for some further debugging?
Questions
- Can MYIDE.COM run on an 8080 or 8085 CPU?
- Can MYIDE.COM run under cp/m 2.2? cp/m3 NOT required for MYIDE.COM test / utility program?
- jeffa
On Saturday, June 27, 2015 at 2:10:53 PM UTC-7, Jeff Albrecht wrote:
I'm checking in with a progress report and to say thank you John for the board and the mailing to all of us. And thank you Gary for burning the GALs and mailing them to me.
This v.3 is my first experience with the IDE/CF board. I've installed all the non socketed parts, verified voltages and then the two GALs. Rather than use my front panel or non existent monitor board (except a CCS Z80 CPU more on that later) I assembled and ran this small program on a stock (except the disk I/O) Altair 8800b to exercise the ports.
; jha 6/27/2015 testport.asm ; test the S-100 IDE v.3 port addressing ; 0100 org 0100h 0100 DB30 loop: in 030h 0102 C30001 jmp loop 0105 end
Before I run the program I clip on the logic analyzer of my S-100/N8VEM extender to pin 23 of GAL 1 ADDR_8255* it's HIGH. I run the program and I get a couple visible cycles/pulses then the HIGH and LOW lines are cycling so quickly I can't see them cycle anymore. The LOHI and HILO transition leds are on too. <pause> May as well put a scope on it. I've got a pulse width 480ns at 100khz. I'm not seeing it on the 8255 pin 6 CS*
Looks good right? I'm a bit curious about the initial ?settling? time when I first start the test program. I'll move on to some of the other tests I see in the v.2 notes.
Has anyone, maybe Bob Bell, ever run the MYIDE ROM on the California Computer Systems (CCS) 2810 Z80 CPU?
Does anyone have a system generated for a CCS 2810CPU, CCS 2422 floppy controller and the IDE/CF card?
- jeffa KF7CRU @jhalbrecht / @TheRetroWagon
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