git.defcon.no Git - z80cpm/blob - qq.asm

   1 ; qq.asm
   2 ; ASM dialect is for crasm/z80, producing Intel HEX.
   3 ; Compile using "crasm -o qq.hex qq.asm" and transfer
   4 ; to CP/M system for final conversion to COM file using LOAD.COM
   5 ;
   6 ; A simple demonstration of using BDOS calls 2 C_WRITE
   7 ; and 9 C_WRITESTR to put something on the console.
   8 ; Also, forms a very simple template for setting up ASM for CP/M ;)
   9 CPU Z80
  10 OUTPUT HEX
  11
  12 CONOUT  EQU 2
  13 STROUT  EQU 9
  14 BDOS    EQU 5
  15
  16 * = $100
  17 START   LD E, 'q'
  18         LD C, CONOUT
  19         CALL BDOS
  20
  21         LD DE, message
  22         LD C, STROUT
  23         CALL BDOS
  24         RET
  25
  26 message asc "Testing 123$"