GitHub - sjgray/cbm-edit-rom: Create standard or custom PET/CBM Editor ROMs

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Create standard or custom PET/CBM Editor ROMs

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Name		Name	Last commit message	Last commit date
Latest commit History 349 Commits
binaries		binaries
disassemblies		disassemblies
docs		docs
removed		removed
software		software
.gitattributes		.gitattributes
.gitignore		.gitignore
README		README
TODO.txt		TODO.txt
acme.exe		acme.exe
banner.asm		banner.asm
cpetrom.bin		cpetrom.bin
cpetsubs.asm		cpetsubs.asm
crtc-reg-normal.asm		crtc-reg-normal.asm
crtc-reg-soft40.asm		crtc-reg-soft40.asm
crtc-reg-ss40.asm		crtc-reg-ss40.asm
crtc-tables.asm		crtc-tables.asm
crtc.asm		crtc.asm
edit.asm		edit.asm
editautorun.asm		editautorun.asm
editbanner.asm		editbanner.asm
editbarrow.asm		editbarrow.asm
editescape.asm		editescape.asm
editreboot.asm		editreboot.asm
editrom-report.txt		editrom-report.txt
editrom.asm		editrom.asm
editrom40.asm		editrom40.asm
editrom40cls.asm		editrom40cls.asm
editrom40link.asm		editrom40link.asm
editrom40scrollup.asm		editrom40scrollup.asm
editrom80.asm		editrom80.asm
editrom82.asm		editrom82.asm
editrom82ext.asm		editrom82ext.asm
editrom_hi.asm		editrom_hi.asm
editsoft40.asm		editsoft40.asm
editwedge.asm		editwedge.asm
execudesk.asm		execudesk.asm
extclock.asm		extclock.asm
extcrtc.asm		extcrtc.asm
extcset.asm		extcset.asm
extextra.asm		extextra.asm
extkeyscan.asm		extkeyscan.asm
extkeytables.asm		extkeytables.asm
extprinting.asm		extprinting.asm
extscreenptr.asm		extscreenptr.asm
exttabs.asm		exttabs.asm
info.asm		info.asm
io.asm		io.asm
io_euro-4v4e.asm		io_euro-4v4e.asm
irq.asm		irq.asm
jiffyfix.asm		jiffyfix.asm
kbdz-cbm2.asm		kbdz-cbm2.asm
keyboard-tables1.asm		keyboard-tables1.asm
keyboard-tables2.asm		keyboard-tables2.asm
keyboard-tables3.asm		keyboard-tables3.asm
keyboard.asm		keyboard.asm
keyscan-b.asm		keyscan-b.asm
keyscan-c64.asm		keyscan-c64.asm
keyscan-cbm2.asm		keyscan-cbm2.asm
keyscan-din.asm		keyscan-din.asm
keyscan-g.asm		keyscan-g.asm
make.bat		make.bat
membasic4.asm		membasic4.asm
memchips.asm		memchips.asm
memcpet.asm		memcpet.asm
memkernal.asm		memkernal.asm
memlow.asm		memlow.asm
memzeropage.asm		memzeropage.asm
screen0v.asm		screen0v.asm
screen1c.asm		screen1c.asm
screen1cshift.asm		screen1cshift.asm
screen1v.asm		screen1v.asm
screen2c.asm		screen2c.asm
screen2v.asm		screen2v.asm
scrollpause-b.asm		scrollpause-b.asm
scrollpause-din.asm		scrollpause-din.asm
upet.asm		upet.asm

Repository files navigation

PET/CBM EDIT ROM PROJECT - Steve J. Gray - Started Nov 26, 2013
======================== - Updated - Apr 26, 2022

This project will allow you to build various EDIT ROMS for the Commodore PET/CBM line of computers.

FILES:

make.bat	- Type "make" to assemble with options set in "edit.asm" file

edit.asm	- The "main" source file. Contains directives to choose which options to include/use.

editrom.asm	- Logic to assemble code in LOWER 2K area and determine if HI area is required.
edit_hi.asm	- Logic to assemble code in UPPER 2K area, including IO area.
editrom40.asm	- CODEBASE 0 - 40 column, 2K ROM
editrom80.asm   - CODEBASE 1 - 80 column, 2K ROM
editrom82.asm   - CODEBASE 2 - LOWER area. 80 column, 4K ROM, DIN editor
editrom82ext.asm- CODEBASE 2 - UPPER area.

ext*		- Code for CODEBASE 2's upper 2K of 4K (subsections)
crt*		- Files to define screen settings. Written to CRTC controller chip.
kbd*		- Files to define keyboard matrix for simple keyboard scanning routine.
kbdx*		- Keyboard matrices for extended keyboard scanning routine.
screen*		- Screen line pointer tables for 40/80 column screens
mem*		- Standard PET/CBM memory usage includes - zero page, low mem, and chips etc