Sha256: b8d599c0246dac00bd80f9e92e70d7edfae56ac19abd76e1e93a6172a678173e
Contents?: true
Size: 1.43 KB
Versions: 10
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Stored size: 1.43 KB
Contents
.cr 6800
.tf gbye6800.obj,AP1
.lf gbye6800
;=====================================================;
; Hello world! for the Motorola 6800 ;
; by barrym 2013-03-17 ;
;-----------------------------------------------------;
; Prints the message "Hello world!" to an ascii ;
; terminal (console) connected to a 1970s vintage ;
; SWTPC 6800 system, which is the target device for ;
; this assembly. ;
; Many thanks to: ;
; swtpc.com for hosting Michael Holley's documents! ;
; sbprojects.com for a very nice assembler! ;
; swtpcemu.com for a very capable emulator! ;
; reg x is the string pointer ;
; reg a holds the ascii char to be output ;
;-----------------------------------------------------;
outeee = $e1d1 ;ROM: console putchar routine
.or $0f00
;-----------------------------------------------------;
main ldx #string ;Point to the string
bra puts ; and print it
outs jsr outeee ;Emit a as ascii
inx ;Advance the string pointer
puts ldaa ,x ;Load a string character
bne outs ;Print it if non-null
swi ; else return to the monitor
;=====================================================;
string .as "Hello world!",#13,#10,#0
.en
Version data entries
10 entries across 7 versions & 1 rubygems