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test_tjns.spin
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test_tjns.spin
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dat
orgh 0
org 0
andn outb, ##$FFFF
or dirb, ##$FFFF
call #test1 ' Jump (greater than zero)
call #test2 ' Don't jump (less than zero)
call #test3 ' Jump (zero)
.end jmp #.end
'-------------------------------------------------------------------------------
test1 setcz #%01 wc, wz
mov d, #1
tjns d, #.success ' TEST INSTRUCTION
jmp #.end
.success
setbc cz, #1
setbz cz, #0
cmp d, #1 wz
if_nz jmp #.end
cmp cz, #%01 wz
if_nz jmp #.end
setb outb, #0
.end ret
'-------------------------------------------------------------------------------
test2 setcz #%01 wc, wz
mov d, ##$80_00_00_00
tjns d, #.end ' TEST INSTRUCTION
setbc cz, #1
setbz cz, #0
cmp d, ##$80_00_00_00 wz
if_nz jmp #.end
cmp cz, #%01 wz
if_nz jmp #.end
setb outb, #1
.end ret
'-------------------------------------------------------------------------------
test3 setcz #%01 wc, wz
mov d, #0
tjns d, #.success ' TEST INSTRUCTION
jmp #.end
.success
setbc cz, #1
setbz cz, #0
cmp d, #0 wz
if_nz jmp #.end
cmp cz, #%01 wz
if_nz jmp #.end
setb outb, #2
.end ret
'-------------------------------------------------------------------------------
d res 1
cz res 1