C'mon - Machine Code Monitor for Commodore VIC-20 - v1.0

(c)2001 Aleksi Eeben (email: aeeben@paju.oulu.fi) [OUTDATED]
http://www.cncd.fi/aeeben  [OUTDATED]

Ported to PAL-1/microKIM/KIM-1, version 1.0p, by Dave Hassler, 2022
with the 'blessing' of the author.


Precompiled files in *THIS* PAL-1 version/folder:
CMON-0C00-v3.PTP
CMON-C00.WAV (a HyperTape 3x audio file)

Source/Assembler files for *THIS* version:
C'MON-Lite_($0C00)_PAL.s

General Comment:
	A) C'MON for PAL uses Zero Page $20-22 and $E7-EE. It also uses the bottom of the stack at $0100 for its input buffer.
	B) I removed references to commands not available in the original VIC-20 'Lite' version, which are also not available in the PAL-1 version.
	C) If a command has only a single four-digit hex number as an argument, the output will be one page-worth.

From Aleksi's original documentation [DHH comments in brackets]:

Monitor commands:


A       Assemble
        A 1000
        A 1000 LDA #$00

        Assembles LDA #$00 to $1000 and prompts for next memory location.
        Enter an empty line to exit assemble mode.

	'Undocumented 6502 commands' are not included.


D       Disassemble
        D 1000
        D

        Disassembles next 16 instructions.


G       Go
        G 1000

	[If the called routine ends with RTS, it will return to C'MON.]


I       Text view
        I 1000

        View memory contents in PETSCII [ASCII] text only.


M       Hex dump, with additional ASCII output
        M 1000


R       Registers
        R

        Shows captured values of AC, XR, YR, SP and flags.


W       Write to memory
        W 1780 03 27 0D 0F 0E

        Writes any number of bytes to memory.


X	Exits the program to the PAL-1/microKIM monitor.


Memory locations used [edited for PAL-1]:

$00E7-$00EE     ($ED-EE) holds the current address, others are misc. variables
$0100-$0152     Assembly buffer
$0153-$0158     Captured registers (captured on startup and after each G)