The Mobius and 386 machines

[bubach]

mm.. i think so.
tim should try to decide witch cpu is required.... ;D

[Tim]

I already decided -- Pentium.

[bubach]

until when? until someone discovers that u have used a pentium 3 opcode? just kidding..

[DennisCGc]

Hey, I tested it and my keyboard doesn't work
Bochs log:

Code: Select all

00155975058i[KBD  ] reset-disable command received
00157455481e[KBD  ] controller_enQ(): OUTB set!
**same message repeated a dozen of times**
00157466698e[KBD  ] controller_enQ(): OUTB set!
00285290500i[KBD  ] internal keyboard buffer full, ignoring scancode.(20)
00285632500i[KBD  ] internal keyboard buffer full, ignoring scancode.(a0)
00285906500i[KBD  ] internal keyboard buffer full, ignoring scancode.(20)

I don't know what's wrong with it.
(But the startup screen looks quite good )

When I tested it again, when I didn't press the F12 button in bochs, which means: use mouse, it worked.
May be a bug in bochs, or the Mobius.

[srg]

I already decided -- Pentium.

Pentium! Oh well. As that's what your going for, it would be a good idea if you optimised it for the pentium as well , compiler optimisations and instruction pairings etc.

As for below Pentium cpuid, supported are:
Intel 486DX4 100 (but AFAIK not AMD 486DX4 100/120)
AMD Am5x86 133MHz
Possibly Cyrix 5x86

One special case though is the Cyrix 6x86. It had the CPUID instruction but it could be turned on/off, the default is OFF .
Only a few BIOSs had an option to turn it on!

Will you be supporting Cyrix's Tim? (I'll test the mobius with a cyrix soon).

hope this helps.
srg