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; =============================================================================
; tasks.asm - two demo userland tasks (text-in-ROM model).
; Each loops: write its letter to the console, then yield. This exercises the
; whole pipeline: syscall trap, console, and the HRAM context switch swapping
; RAM banks / SVBK between tasks.
; =============================================================================
INCLUDE "include/gbos.inc"
SECTION "tasks", ROM0
TaskA::
.loop
ld de, .msg
ld b, 1 ; len
ld c, SYS_WRITE
rst $30
ld c, SYS_YIELD
rst $30
jr .loop
.msg
db "A"
TaskB::
.loop
ld de, .msg
ld b, 1
ld c, SYS_WRITE
rst $30
ld c, SYS_YIELD
rst $30
jr .loop
.msg
db "B"
|
