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CDE

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Ingy döt Net 2013-04-10 16:57:12 -07:00
parent 518da4a923
commit 764da6cbbb
6144 changed files with 83610 additions and 11 deletions
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2
Task/Conditional-structures/6502-Assembly/conditional-structures-1.6502 Normal file
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LDA #10
CMP #11

20
Task/Conditional-structures/6502-Assembly/conditional-structures-2.6502 Normal file
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BNE ;Branch on Not Equal - branch when the zero flag is set
BEQ ;Branch on EQual - branch when the zero flag is set.
;The zero flag is set when the result of an operation is zero
BMI ;Branch on MInus
BPL ;Branch on PLus - branch when the sign flag is cleared/set.
;The sign flag is set when the result of an instruction is a negative number
;and cleared when the result is a positive number
BVS ;Branch on oVerflow Set
BVC ;Branch on oVerflow Cleared - branch when the overflow flag is cleared/set.
;The overflow flag is set when the result of an addition/subtraction would
;result in a number larger than 127 or smaller than -128
BCS ;Branch on Carry Set
BCC ;Branch on Carry Clear - branch when the carry flag is cleared/set.
;The carry flag is set when an addition produced a carry and when
;a subtraction produced a borrow and cleared if an addition/subtraction
;does not produce a carry/borrow. The carry flag also holds bits
;after shifts and rotates.

6
Task/Conditional-structures/6502-Assembly/conditional-structures-3.6502 Normal file
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LDA #200
CMP Variable
BEQ #3 ;if equal, skip ahead 3 bytes...
CLC ;if unequal, continue executing instructions
ADC #1
STA OtherVariable ; ...to here.

4
Task/Conditional-structures/6502-Assembly/conditional-structures-4.6502 Normal file
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LDX #100
Loop: ...do something
DEX
BNE Loop