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Sun SBus card dumps? #113936
09/13/18 03:26 PM
09/13/18 03:26 PM
Joined: May 2009
Posts: 1,742
J
Just Desserts Offline OP
Very Senior Member
Just Desserts  Offline OP
Very Senior Member
J
Joined: May 2009
Posts: 1,742
All of this progress on emulating the early SPARCstations raises a good question: We currently have dumps of a bwtwo card (1-bit monochrome display), a cgthree card (8-bit color display), and a cgsix card (accelerated 8-bit color display), but are there any others floating around?

SBus was interesting in that it's almost guaranteed for a card to have a dumpable ROM on it. The reason for this is that the boot monitor and OS both probe the base slot address for an identifying word, as well as the name of the card, at a minimum. The ROMs seen so far range in size from 2 kilobytes (bwtwo and cgthree) to 32 kilobytes (cgsix).

Furthermore, is there anyone out there who has any SBus cards not yet dumped and who has the capability of desoldering and dumping them, or at least sending them off to someone who can do so?

Re: Sun SBus card dumps? [Re: Just Desserts] #113937
09/14/18 02:48 AM
09/14/18 02:48 AM
Joined: Mar 2006
Posts: 1,026
PA, USA
L
Lord Nightmare Offline
Very Senior Member
Lord Nightmare  Offline
Very Senior Member
L
Joined: Mar 2006
Posts: 1,026
PA, USA
I'm trying to figure out how to dump the SBus roms from the OpenBoot forth prompt, and haven't quite figured it out yet. I don't think the SBus roms map into the sparc memory address space, they must map into one of the other address spaces, and I'm not sure how to probe those from OpenBoot.

LN


"When life gives you zombies... *CHA-CHIK!* ...you make zombie-ade!"
Re: Sun SBus card dumps? [Re: Just Desserts] #113938
09/14/18 03:40 AM
09/14/18 03:40 AM
Joined: May 2009
Posts: 1,742
J
Just Desserts Offline OP
Very Senior Member
Just Desserts  Offline OP
Very Senior Member
J
Joined: May 2009
Posts: 1,742
Code
ok " /sbus" select-dev
ok " 1" decode-unit
ok 10000 map-in
ok .s
ffed9000
ok ffed9000 10000 dump


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