Source can be outputted in several binary formats. By default the format adhere's to the Commodore 8-bit binary, with the first two bytes the load address of the code, followed by the object code itself.
Set the format at the command line with the --format option.
~$ dotnet 6502.net.dll myprog --format=cbm
Alternatively you can specify with the .format directive.
.cpu "z80"
.format "zx"
* = $8000
xor a,a
Many formats are specific to the CPU family of the source, though some are available to all CPU types. The full list of valid formats are:
| Format | CPU Family | Description |
|---|---|---|
| amsdos | i8080/z80 | Amstrad CPC DOS (disk) |
| amstap | i8080/z80 | Amstrad CPC DOS (tape) |
| apple2 | 65xx | Apple ][ binary with Apple DOS header |
| atari-xex | 65xx | Atari 8-bit binary with XEX header |
| bytesource | All | Refactor source as .byte statements |
| cart | 65xx | Vice/CCS64-compatible cartridge image |
| cbm | 65xx | Commodore DOS binary with load address header (default) |
| d64 | 65xx | Commodore emulator D64 disk image format |
| flat | All | Flat binary with no header |
| hex | All | Hex dump of the binary output as plain text |
| msx | i8080/z80 | MSX |
| srec | All | Motorola S-record |
| srecmos | All | MOS Technology formatted file (S-record variant) |
| t64 | 65xx | Commodore emulator T64 tape image format |
| zx | i8080/z80 | ZX Spectrum |
If a section is defined in source or as an option output can be limited to that section with the --output-section argument.
-$ dotnet 6502.Net.dll myprog.asm --dsection=text,$0801 -o myprog.prg --output-section=text
Existing object files can be patched if a bugfix is required to be applied. The applied offset must be an address.
6502.Net.exe myfix.asm -o mygame.prg --patch=$452b
6502.Net can generate program listings. The -l/--list option specifies an output file.
6502.Net.exe myprog.s -o myprog.prg --list=myprog_list.s
By default, the listing will contain monitor code, disassembly, and original source per line.
* = $033c
start lda $0380 ; swap $0380 and $0381
ldx $0381 ; load each into registers
sta $0381 ; and store each
stx $0380
/* listing is:
.033c * = $033c
.033c ad 80 03 lda $0380 start lda $0380 ; swap $0380 and $0381
.033f ae 81 03 ldx $0381 ldx $0381 ; load each into registers
.0342 8d 81 03 sta $0381 sta $0381 ; and store each
.0345 8e 80 03 stx $0380 stx $0380
*/
Different command line options control the listing of each element. The -a option will remove monitor code, the -d option will remove disassembly, and -s will remove source code.
To control individual statements or blocks of statements from appearing in program listing, use the .proff directive, and to resume listing use .pron.
.proff
.include "mylib.s" // contents of "mylib.s" will not be included in listing
.pron
lda #$00
//...
In addition to program listing, it is possible to generate a list of all defined symbols with the -L/--label option.
// contents of "myprog.s":
chrout = $ffd2
* = $033c
start lda $0380
// dotnet 6502.Net.dll myprog.s -o myprog.prg --label=myprog_labels.s
// contents of "myprog_labels.s":
chrout = $ffd2 (65490)
start = 033c (828)
By default all constants and labels will list. If you desire only to include labels, use the --labels-addresses-only option.
The --vice-labels option sets the output in the VICE label format for use in debugging code in that emulator.
al 33c .start