Re: [GXemul-users] Algor emulation and DEC 21143 Support

[Anders G. <ga...@gm...>]

Hi Robin,

On Sat, 2008-04-12 at 10:46 +0100, Robin Randhawa wrote:
> I'm playing with the algor emulation in GXEmul 0.4.3 in my spare time.
> ..
> Before I dig into this, I was wondering if someone could tell me if
> networking is known to work with the p5064 at all ?

Short answer: No.

Longer: I remember experimenting with it, and I also remember commenting
it out since I never got it to work. I don't recall exactly what the
problem was. Networking has never officially worked with the p5064
emulation mode.

Because of the hack-ish way PCI devices are used in GXemul, you need to
have some glue in src/devices/bus_pci.c, in the PCIINIT(dec21143)
function. The pci_int_line, isa, and irq variables need to be set to the
correct values, which may or may not be values that are connected to the
real world. They may themselves just be hack implementations. :-/

Interestingly, GXemul 0.4.3 actually _has_ an entry for Algor:

        case MACHINE_ALGOR:
                /*  TODO  */
                irq = 8 + 7;
                pci_int_line = 0x407;
                break;

but this was removed some time after 0.4.3, most likely because it never
worked.


Anders