humbertocsjr / osasm

Old-School Assembler

Old-School Assembler

Minix Assembler compatible for DOS

Variants

• OSASMCOM - Generate .com file. ORG 0x100
• OSASMSYS - Generate .sys file. ORG 0x0
• OSASMPRG - Generate .prg file. ORG 0x800

Usage

Call osasm variant with file name without extension.

osasmcom file

Macros

• .zerob size - Insert zero bytes in output file
• .zerow size - Insert zero words in output file
• .include file - Import external .s file
• .byte value - Insert one byte in output file
• .word value - Insert one word in output file
• .ascii "string" - Insert one string in output file
• .asciz "string" - Insert one string with ASCIZ ending in output file