This is an update to Mike Riley's ASM/02 cross compiler for the 1802 running on Windows/Linux/etc.

https://github.com/rileym65/Asm-02

The original ASM/02 license reads:

 *******************************************************************
 *** This software is copyright 2021 by Michael H Riley          ***
 *** You have permission to use, modify, copy, and distribute    ***
 *** this software so long as this copyright notice is retained. ***
 *** This software may not be used in commercial applications    ***
 *** without express written permission from the author.         ***
 *******************************************************************

This code can use ya_getopt (https://github.com/kubo/ya_getopt), which is provided under a 2-clause BSD-style license. If you are compiling under Linux using the included Makefile, you can set the GETOPT variable to 'ya_getopt' to use this instead of the standard getopt library, like so:

make GETOPT=ya_getopt

This code should be able to be compiled with any reasonable C compiler. All that is needed is to compile and link all the "C" files in this repository to produce the assembler executable. There are no compiler options or settings that are strictly required.

The assembler can be built with Microsoft Visual Studio without using its IDE. Any recent version of the free "Community Edition" of Visual Studio should work. Start a "Developer Command Prompt" from the Windows Start Menu and change the current directory to the one containing the source code. This command is sufficient to build all the sources:

cl *.c /Fe:asm02.exe

Of course the Visual Studio IDE can be used to easily create a Solution/Project to build the "C" files in this repository.

The assembler can produce binary, Intel hex, or a relocatable format for use with Link/02. It offers a preprocessor and conditional compilation. There is also a mechanism for defining new instructions such as those found in opcodes.def.

• Labels must end with a colon
• Hex numbers may be specified with an 'h' suffix, or a '$' prefix. When using the 'h' suffix, the number must start with a digit from 0-9.
  Examples:

12h
$12
0f7h
$F7

• You can't use ORG to specify an absolute address within a PROC/ENDPROC.

• .1805 - Enable 1805 mode
• .arch=elf2k - Set Elf2000 memory model
• .arch=mchi - Set Membership Card high-RAM memory model
• .arch=mchip - Set MemberCHIP card memory model
• .arch=mclo - Set Membership Card low-RAM memory model
• .arch=melf - Set Micro/Elf memory model
• .arch=pev - Set Pico/Elf memory model
• .arch=pev2 - Set Pico/Elf V2 memory model
• .arch=mini - Set 1802/Mini memory model
• .arch=max - Set 1802/MAX memory model
• .align word - Align address on word boundary (2 bytes)
• .align dword - Align address on double word boundary (4 bytes)
• .align qword - Align address on quad word boundary (8 bytes)
• .align para - Align address on paragraph boundary (16 bytes)
• .align 32 - Align address on 32-byte boundary
• .align 64 - Align address on 64-byte boundary
• .align 128 - Align address on 128-byte boundary
• .align page - Align address on page boundary (256 bytes)
• .binary - Output as binary
• .intel - Output as Intel hex
• .list - Enable show list
• .rcs - Output as Rcs hex
• .sym - Show symbols
• .link line - Pass 'line' to linker
• .suppress - Suppress further byte output
• .op "opcode","arglist","translation" (see examples, below)

• B - byte
• N - nybble
• W - word
• R - R-register

• 0-9 - Nybble after 4-bit left shift
• A-F - Nybble after 4-bit left shift
• Hn - High byte of argument n
• Ln - Low byte of argument n
• Tn - Low byte of argument n, error if not in current page
• $n - Or with argument n after 4-bit left shift
• Wn - Output the two bytes of word argument n

• -1805 - Enable 1805 mode
• -b, -binary - Output in binary
• -Dname - Define name with value of "1"
• -Dname=value - Define name with specified value
• -r, -reloc - Output in RCS hex
• -i, -intel - Output in Intel hex
• -Ipath - Add path to search list for #include files
• -l, -showlist - Show assembly list
• -L, -list - Create .lst file
• -s, -symbols - Show symbols
• -m, -map - Show memory map in binary/hex mode
• -melf - Set Micro/Elf memory model
• -pev - Set Pico/Elf memory model
• -pev2 - Set Pico/Elf V2 memory model
• -elf2k - Set Elf2000 memory model
• -mclo - Set Membership Card low RAM memory model
• -mchi - Set Membership Card high RAM memory model
• -mchip - Set MemberChip Card memory model
• -mini - Set 1802/Mini memory model
• -max - Set 1802/MAX memory model
• -ram=low-high - Set explicit RAM region
• -rom=how-high - Set explicit ROM region
• -cr - Use CR as line ending
• -lf - Use LF as line ending
• -crlf - Use CRLF as line ending
• -lfcr - Use LFCR as line ending
• -version, -v - Display the version number
• -help, -h - List of options

• [month] - Build month
• [day] - Build day
• [year] - Build year
• [hour] - Build hour
• [minute] - Build minute
• [second] - Build second
• [build] - Build number

• #include filename
• #define symbol value
• #undef symbol
• #if expr
• #ifdef symbol
• #ifndef symbol
• #else
• #endif
• #error text

• extrn label - Define external label
• public label - Define label as public
• db bb,bb,... - Define bytes
• dw ww,ww,... - Define words
• dd dd,dd,... - Define double words
• df ff,ff,... - Define floating point data
• ds ww - Define storage
• equ expr - Set label to value
• org expr - Set assembly address
• proc label - Begin relocatable procedure
• endp - End of relocatable procedure
• ver - Build standard Elf/OS VER header
• ever - Build extended Elf/OS VER header
• eever - Build enhanced Elf/OS VER header

.op "PUSH","N","9$1 73 8$1 73"
.op "POP","N","60 72 A$1 F0 B$1"
.op "CALL","W","D4 H1 L1"
.op "RTN","","D5"
.op "MOV","NR","9$2 B$1 8$2 A$1"
.op "MOV","NW","F8 H2 B$1 F8 L2 A$1"
.op "SUB16","NR","8$2 52 8$1 F7 A$1 9$2 52 9$1 77 B$1"
.op "SHL16","N","8$1 FE A$1 9$1 7E B$1"
.op "SHR16","N","9$1 F6 B$1 8$1 76 A$1"
.op "ADD16","NW","8$1 FC L2 A$1 9$1 7C H2 B$1"
.op "SUB16","NW","8$1 FF L2 A$1 9$1 7F H2 B$1"
.op "CLC","","fc 00"
.op "STC","","ff 00"