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Many fixes and improvements to the BIOS Extension ROM. (#33)

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* Revert "Uploaded_2_9_2025"

This reverts commit ec79bbdbc9.

* Fixing DEBUG_IO builds.

* Make the IO port base a define.

* Fix CPU test to properly handle 808x vs V20.

* Improve timeout management logic.

* Improve SD Card initialization logic.

* Implement INT18h bootstrapping.

* Implementing a different test for processor type.

* Allow use with another fixed drive (eg: ESDI drive).

* Allow swapping driver ID between the BIOS disk and XTMax.

* Fix address of the ROM segment.

* Fixing missing STI at the top of the handler.

* Major rework of IO to use MOVSW.

* More code reorg and auto-detecting second drive.

* Update XTSD to use MOVSW.

* Add diagnostics program.

* Workaround for MS-DOS strange handling of interrupts.

* Use a lookup table for the memory map.

* Make the BootROM relocatable.

* Some more refactor of the Teensy code.
This commit is contained in:
Matthieu Bucchianeri
2025-02-17 15:11:37 -08:00
committed by GitHub
parent ec79bbdbc9
commit fe8385da08
15 changed files with 1199 additions and 456 deletions
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3
XTMax/Drivers/BootROM/build.cmd
View File

@@ -1,2 +1,3 @@
..\Driver_Build_Tools\NASM\nasm.exe -f bin -o bootrom.com -DAS_COM_PROGRAM .\bootrom.asm
..\Driver_Build_Tools\NASM\nasm.exe -f bin -o bootrom .\bootrom.asm & python checksum.py
..\Driver_Build_Tools\NASM\nasm.exe -f bin -o bootrom .\bootrom.asm & python checksum.py & python generate_header.py
..\Driver_Build_Tools\NASM\nasm.exe -f bin -o xtmdiags.com .\diags.asm