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added __frameset_b #772

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added __frameset_b #772

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22 changes: 22 additions & 0 deletions src/crt/frameset_b.src
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Original file line number Diff line number Diff line change
@@ -0,0 +1,22 @@
.assume adl=1

.section .text
.global __frameset_b
.type __frameset_b, @function

; TODO: merge into __frameset.src once compiler starts emitting __frameset_b
__frameset_b:
; framesets -A bytes (1 to 256 bytes)
; framesets 256 bytes if A is zero
scf
sbc hl, hl
ld l, a
; __frameset:
pop de
push ix
ld ix, 0
add ix, sp
add hl, sp
ld sp, hl
ex de, hl
jp (hl)
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