National Semiconductor ICM-3216 bringup.

[daverand]

I'm working on the ICM-3216, now, in MAME. I have it booting, loading /unix and then crashing - I'm close.

The issue is media. I have Bitsavers' tape from https://bitsavers.org/bits/NationalSemiconductor/NS32000/Genix/icm-unix.7z, but this is a quite old System V release (and uses the V1.283 roms, vs the more recent V2.44). While I have an ICM-3216, it has not been turned on in about 30 years, and the tape's rubber has melted (and tracking down my DC300's has proven to be...elusive).

If you know of anyone with an ICM 3216 System Vr2 or Vr3 tape, please let me know...

 

[daverand]

It lives! Two things I would appreciate; 1) I have found multiple ROM versions. If you have an ICM-3216, please dump the roms for me?
2. If you have Sys Vr2 or Sys Vr3 images, please forward...

 

[daverand]

PR:

natsemi/icm3216: implement the Z80 I/O processor and SCSI subsystem by davidlrand · Pull Request #15531 · mamedev/mame

The ICM-3216 offloads disk and tape I/O to a Z80 I/O processor (IOP) running its own firmware ROM. The IOP owns an NCR5385 SCSI controller and moves data to and from NS32016 main memory across the ...

github.com

 

[smj]

This is wonderful, thanks for your hard work! EPROM dumps have been sent.