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don't disable and reenable interrupts

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This commit is contained in:
Corwin Kuiper 2021-06-23 23:08:38 +01:00
parent b98e6cbb02
commit 597b9370fc
1 changed files with 0 additions and 7 deletions
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7
agb/interrupt_simple.s
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@ -5,9 +5,6 @@
InterruptHandlerSimple:
ldr r4, =0x04000200 @ interrupt enable register location
@ disable interrupts by setting bit 0 to 0
strh r2, [r4, #8]
ldrh r1, [r4] @ load 16 bit interrupt enable to r1
ldrh r3, [r4, #2] @ load 16 bit interrupt request to r3
and r0, r1, r3 @ interrupts both enabled and requested
@ -37,9 +34,5 @@ InterruptHandlerSimple:
orr r2, r2, #0x92
msr cpsr_c, r2
@ reenable interrupts by setting bit 0 to 1
mov r0, #1
strh r0, [r4, #8]
bx lr @ return to bios
.pool