Comments on: Coherent vs IDE controllers…

By: DOS

DOS — Fri, 02 Oct 2015 14:34:37 +0000

Yes, it seems to work when applied to Bochs 2.6.8 (I can boot the hard disk image from the top of the article). From a quick look at some ATA specs, it looks like this is a valid thing to do. Maybe one day I’ll submit a patch to Bochs for this.

If only I knew how to slow Bochs down so I could play /usr/game/chase (pass -c flag for color) which seems to be a Pac Man clone, I guess other emulators will have this feature.

For the record, qemu 2.4.0.1 also works, not that I did too much under it except boot the hard disk image.

By: neozeed

neozeed — Tue, 10 Feb 2015 04:54:01 +0000

In reply to SA1988. Indeed it does run! And it's much more stabler than Qemu.

By: SA1988

SA1988 — Mon, 09 Feb 2015 18:15:32 +0000

the latest svn rv of pcem can run this piece of software 🙂 (as of rv202).

By: neozeed

neozeed — Sat, 17 Jan 2015 02:01:59 +0000

In reply to Nick.

Qemu is probably the easiest to use, as you can then ‘mount’ a directory as a fat disk, and copy in the source that way… I haven’t seen how to build the kernel yet though…

By: Nick

Nick — Fri, 16 Jan 2015 21:09:48 +0000

I ran into the PCEm panic so I went away and installed on a 386DX40 with IDE controller and a 256MB compact flash card. I’ve also got a 1542 but I can’t find a drive in the attic to fit it…

No problems with the install just unfamiliarity with unices of that vintage.

By: neozeed

neozeed — Wed, 14 Jan 2015 07:43:19 +0000

In reply to neglectoru. it could be worth a shot...

By: neozeed

neozeed — Wed, 14 Jan 2015 07:42:39 +0000

In reply to Raijinzrael. I was busy fighting glib2 on OS X... I've posted it, so we'll see.

By: Raijinzrael

Raijinzrael — Tue, 13 Jan 2015 22:32:48 +0000

Would be really nice if you could report the bug that you found running Coherent in PCEm to PCEm team, so they can fix it :-).

By: crazyc

crazyc — Tue, 13 Jan 2015 22:25:06 +0000

In reply to crazyc.

And for that matter if the 386 can’t swap it’s probably not using the good old 4k pages/4gig address space…?

Paging is enabled and all the segments have 0 base and 4G limits so it shouldn't have any address space limitations.

By: neglectoru

neglectoru — Tue, 13 Jan 2015 20:41:47 +0000

This seems naive, but if you recompile (hack) bochs such that command 0x31 (write sector no retry) does the same thing as 0x30 (write sector with retry), I wonder if it would work…