[Simh] Intel systems problems.

[Gene Irwin]

I'm trying to get the isys80x0 series to use the floppy disk controllers,
but no matter what I try to do in the SCP as far as enabling or disabling
the SBC20x or ZX200A, the mon80 (a or b) always says "No Disk Controller
Present" when I issue the FB command.

I'm probably missing something like a port output command, or a complie
time setting, or something.

When I start the emulator I get:

-----------------
$ isys8010
Initializing iSBC-80/10 SBC
   Onboard Devices:
   8080: Reset
      8251-0: Hardware Reset
      8251-0: Registered at 00EC
         Port 00EC is assigned to dev 0000
         Port 00ED is assigned to dev 0000
      8251-0: Software Reset
      8255-0: Reset
      8255-0: Registered at 00E4
         Port 00E4 is assigned to dev 0000
         Port 00E5 is assigned to dev 0000
         Port 00E6 is assigned to dev 0000
         Port 00E7 is assigned to dev 0000
      8255-1: Reset
      8255-1: Registered at 00E8
         Port 00E8 is assigned to dev 0001
         Port 00E9 is assigned to dev 0001
         Port 00EA is assigned to dev 0001
         Port 00EB is assigned to dev 0001
      EPROM: Configured, Not attached
   Multibus: Reset
      iSBC-201 FDC Board - Not Found
      iSBC-202 FDC Board - Found
         isbc202-0: Hardware Reset
         isbc202-0: Registered at 0078
         Port 0078 is assigned to dev 0000
         Port 0079 is assigned to dev 0000
         Port 007A is assigned to dev 0000
         Port 007B is assigned to dev 0000
         Port 007F is assigned to dev 0000
         isbc202-0: Software Reset
         SBC2020: Configured, Status=19 Attached to (null)
         SBC2021: Configured, Status=1B Attached to (null)
         SBC2022: Configured, Status=3B Attached to (null)
         SBC2023: Configured, Status=7B Attached to (null)
         isbc202-0: Software Reset
         SBC2020: Configured, Status=19 Attached to (null)
         SBC2021: Configured, Status=1B Attached to (null)
         SBC2022: Configured, Status=3B Attached to (null)
         SBC2023: Configured, Status=7B Attached to (null)
      ZX-200A FDC Board - Not Found

Intel System 80/10 simulator V4.0-0 Current        git commit id: 584147fb
sim>
-----------------------------------
But devices are all disabled:
-----------------------------------
sim> sh de
Intel System 80/10 simulator configuration

I8080
EPROM
RAM
I8251
I8255    2 units
MBIRQ
SBC064    disabled
SBC201    disabled
SBC202    disabled
ZX200A    disabled
sim>
---------------------------------------------------

and if I enable or disable any of the 3 devices and issue a reset command,
I get the same output as the initial status display, nothing changes.

what am I doing wrong?

I'm trying to use Bill Beech's config files, disk images and rom images to
boot CP/M on these devices but I can't find any documentation that will
clear up any of the issues I am having.

Thanks for looking into this . . .
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