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Fixed CGA graphics modes on VGA cards

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This commit is contained in:
Jeff Parsons 2016-03-12 13:33:21 -08:00
commit 0eddbd05a3
60 changed files with 6775 additions and 404 deletions
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10
_posts/2015-04-16-compaq-deskpro-386-update.md
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@ -8,8 +8,8 @@ machines:
- type: pc
id: deskpro386
debugger: true
config: /devices/pc/machine/compaq/deskpro386/ega/2048kb/machine.xml
uncompiled: true
config: /devices/pc/machine/compaq/deskpro386/ega/2048kb/debugger/machine.xml
---
PCjs can now boot the [COMPAQ DeskPro 386/16 ROM BIOS](/devices/pc/bios/compaq/deskpro386/).
@ -143,10 +143,10 @@ to match that of the 1st megabyte whenever A20 is disabled. I could probably ge
only the first 64Kb of the 2nd megabyte, but until I'm actually able to run some tests on a real
DeskPro 386, I'm going to assume COMPAQ's A20 implementation affected the entire 2nd megabyte.
Here's my [COMPAQ DeskPro 386/16](/devices/pc/machine/compaq/deskpro386/ega/2048kb/) test configuration.
Set a breakpoint at F000:F498 ("bp f000:f498") in the Debugger panel to see the above code in action.
When the machine is operating in real-mode, you can use the "rp" command to dump all the registers,
including the current base and limit values loaded into the segment registers.
Here's my [COMPAQ DeskPro 386/16](/devices/pc/machine/compaq/deskpro386/ega/2048kb/debugger/) test
configuration. Set a breakpoint at F000:F498 ("bp f000:f498") in the Debugger panel to see the above
code in action. When the machine is operating in real-mode, you can use the "rp" command to dump all
the registers, including the current base and limit values loaded into the segment registers.
{% include machine.html id="deskpro386" %}