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samiam9512 |
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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! !
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! 8080 CPU INSTRUCTION TEST !
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! 2006/10/07 Scott Moore !
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! !
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! 8080 CPU instruction test for hardware simulation. The "cpu8080" !
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! environment, with its select controller and interrupt controller, is !
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! initialized, then we test each instruction type for the 8080. Each register !
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! and mode of each instruction is tested, which is possible for the rather !
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! small instruction set of the 8080. Each result is written out to memory, if !
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! required, so that all results are visible from the outside pins of the 8080. !
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! This means that the pin states would be a valid basis for a vector test. !
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! !
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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rom: equ $0000 ! base address of the instruction ROM
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romlen: equ $0400 ! length of ROM
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ram: equ $0400 ! base address of instruction RAM
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ramlen: equ $0400 ! length of RAM
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!
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! Perform testbench initalize, program select controller to the following:
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!
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! Select 1 (ROM): base $0000, length $0400
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! Select 2 (RAM): base $0400, length $0400
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!
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initalize:
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mvi a,$fd ! enable select 1 to $0000, 1kb
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out $02 ! select 1 mask register
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mvi a,$04 ! enable select 2 to $0400, 1kb
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out $05 ! select 2 compare register
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mvi a,$fd
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out $04
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mvi a,$00 ! exit bootstrap mode
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out $00
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lxi sp,$0800 ! place stack at top of ram
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!
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! Instruction test
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!
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! You'll find the order of instructions to test in "the Intel 8080 Assembly
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! language Programming Manual", available online.
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!
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instest:
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!
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! stc
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! cmc
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!
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xra a ! clear A and flags
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push psw ! send to bus
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pop psw ! keep stack neutral
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stc ! set carry
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push psw ! send to bus
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pop psw ! keep stack neutral
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cmc ! clear carry
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push psw ! send to bus
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pop psw ! keep stack neutral
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!
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! inr a
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!
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mvi a,$00 ! a = 0
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inr a ! a = 1, no zero, no sign, odd parity, no AC,
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push psw ! send to bus
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pop psw ! keep stack neutral
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inr a ! a = 1, no zero, no sign, odd parity, no AC,
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push psw ! send to bus
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pop psw ! keep stack neutral
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inr a
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inr a ! a = 3, no zero, no sign, even parity, no AC,
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! carry x
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push psw ! send to bus
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pop psw ! keep stack neutral
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mvi a,$0f ! a = $0f
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inr a ! a = $10, no zero, no sign, odd parity, AC
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push psw ! send to bus
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pop psw ! keep stack neutral
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mvi a,$fe ! a = $fe
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inr a ! a = $ff, no zero, sign, even parity, no AC
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push psw ! send to bus
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pop psw ! keep stack neutral
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inr a ! a = $00, zero, no sign, even parity, AC
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push psw ! send to bus
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pop psw ! keep stack neutral
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!
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! inr b
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!
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mvi b,$00 ! a = 0
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inr b ! a = 1, no zero, no sign, odd parity, no AC,
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! carry x
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push psw ! send to bus
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pop psw ! keep stack neutral
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push b ! send to bus
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pop b ! keep stack neutral
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inr b ! a = 1, no zero, no sign, odd parity, no AC,
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! carry x
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push psw ! send to bus
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pop psw ! keep stack neutral
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push b ! send to bus
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pop b ! keep stack neutral
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inr b
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inr b ! a = 3, no zero, no sign, even parity, no AC,
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! carry x
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push psw ! send to bus
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pop psw ! keep stack neutral
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push b ! send to bus
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pop b ! keep stack neutral
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mvi b,$0f ! a = $0f
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inr b ! a = $10, no zero, no sign, odd parity, AC
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push psw ! send to bus
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pop psw ! keep stack neutral
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push b ! send to bus
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pop b ! keep stack neutral
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mvi b,$fe ! a = $fe
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inr b ! a = $ff, no zero, sign, even parity, no AC
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push psw ! send to bus
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pop psw ! keep stack neutral
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push b ! send to bus
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pop b ! keep stack neutral
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inr b ! a = $00, zero, no sign, even parity, AC
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push psw ! send to bus
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pop psw ! keep stack neutral
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push b ! send to bus
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pop b ! keep stack neutral
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!
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! inr c
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!
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mvi c,$00 ! a = 0
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inr c ! a = 1, no zero, no sign, odd parity, no AC,
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! carry x
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push psw ! send to bus
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pop psw ! keep stack neutral
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push b ! send to bus
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| 131 |
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pop b ! keep stack neutral
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inr c ! a = 1, no zero, no sign, odd parity, no AC,
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! carry x
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push psw ! send to bus
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pop psw ! keep stack neutral
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push b ! send to bus
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pop b ! keep stack neutral
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inr c
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inr c ! a = 3, no zero, no sign, even parity, no AC,
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! carry x
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push psw ! send to bus
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pop psw ! keep stack neutral
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push b ! send to bus
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pop b ! keep stack neutral
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mvi c,$0f ! a = $0f
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inr c ! a = $10, no zero, no sign, odd parity, AC
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push psw ! send to bus
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pop psw ! keep stack neutral
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push b ! send to bus
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pop b ! keep stack neutral
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mvi c,$fe ! a = $fe
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inr c ! a = $ff, no zero, sign, even parity, no AC
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push psw ! send to bus
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pop psw ! keep stack neutral
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push b ! send to bus
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| 156 |
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pop b ! keep stack neutral
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inr c ! a = $00, zero, no sign, even parity, AC
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push psw ! send to bus
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| 159 |
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pop psw ! keep stack neutral
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push b ! send to bus
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pop b ! keep stack neutral
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!
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! inr d
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!
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mvi d,$00 ! a = 0
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inr d ! a = 1, no zero, no sign, odd parity, no AC,
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! carry x
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push psw ! send to bus
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pop psw ! keep stack neutral
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push d ! send to bus
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| 171 |
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pop d ! keep stack neutral
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inr d ! a = 1, no zero, no sign, odd parity, no AC,
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! carry x
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push psw ! send to bus
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| 175 |
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pop psw ! keep stack neutral
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push d ! send to bus
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| 177 |
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pop d ! keep stack neutral
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inr d
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inr d ! a = 3, no zero, no sign, even parity, no AC,
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! carry x
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| 181 |
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push psw ! send to bus
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| 182 |
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pop psw ! keep stack neutral
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| 183 |
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push d ! send to bus
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| 184 |
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pop d ! keep stack neutral
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| 185 |
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mvi d,$0f ! a = $0f
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inr d ! a = $10, no zero, no sign, odd parity, AC
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push psw ! send to bus
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| 188 |
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pop psw ! keep stack neutral
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| 189 |
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push d ! send to bus
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| 190 |
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pop d ! keep stack neutral
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mvi d,$fe ! a = $fe
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inr d ! a = $ff, no zero, sign, even parity, no AC
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push psw ! send to bus
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| 194 |
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pop psw ! keep stack neutral
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| 195 |
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push d ! send to bus
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| 196 |
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pop d ! keep stack neutral
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| 197 |
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inr d ! a = $00, zero, no sign, even parity, AC
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| 198 |
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push psw ! send to bus
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| 199 |
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pop psw ! keep stack neutral
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| 200 |
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push d ! send to bus
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| 201 |
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pop d ! keep stack neutral
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!
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! inr e
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!
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mvi e,$00 ! a = 0
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inr e ! a = 1, no zero, no sign, odd parity, no AC,
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| 207 |
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! carry x
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| 208 |
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push psw ! send to bus
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| 209 |
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pop psw ! keep stack neutral
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| 210 |
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push d ! send to bus
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| 211 |
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pop d ! keep stack neutral
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| 212 |
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inr e ! a = 1, no zero, no sign, odd parity, no AC,
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| 213 |
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! carry x
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| 214 |
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push psw ! send to bus
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| 215 |
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pop psw ! keep stack neutral
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| 216 |
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push d ! send to bus
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| 217 |
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pop d ! keep stack neutral
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| 218 |
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inr e
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inr e ! a = 3, no zero, no sign, even parity, no AC,
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! carry x
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| 221 |
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push psw ! send to bus
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| 222 |
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pop psw ! keep stack neutral
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| 223 |
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push d ! send to bus
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| 224 |
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pop d ! keep stack neutral
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| 225 |
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mvi e,$0f ! a = $0f
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| 226 |
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inr e ! a = $10, no zero, no sign, odd parity, AC
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| 227 |
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push psw ! send to bus
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| 228 |
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pop psw ! keep stack neutral
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| 229 |
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push d ! send to bus
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| 230 |
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pop d ! keep stack neutral
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| 231 |
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mvi e,$fe ! a = $fe
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| 232 |
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inr e ! a = $ff, no zero, sign, even parity, no AC
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| 233 |
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push psw ! send to bus
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| 234 |
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pop psw ! keep stack neutral
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| 235 |
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push d ! send to bus
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| 236 |
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pop d ! keep stack neutral
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| 237 |
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inr e ! a = $00, zero, no sign, even parity, AC
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| 238 |
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push psw ! send to bus
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| 239 |
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pop psw ! keep stack neutral
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| 240 |
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push d ! send to bus
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| 241 |
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pop d ! keep stack neutral
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| 242 |
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!
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! inr h
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!
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mvi h,$00 ! a = 0
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| 246 |
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inr h ! a = 1, no zero, no sign, odd parity, no AC,
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| 247 |
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! carry x
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| 248 |
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push psw ! send to bus
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| 249 |
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pop psw ! keep stack neutral
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| 250 |
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push h ! send to bus
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| 251 |
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pop h ! keep stack neutral
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| 252 |
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inr h ! a = 1, no zero, no sign, odd parity, no AC,
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| 253 |
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! carry x
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| 254 |
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push psw ! send to bus
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| 255 |
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pop psw ! keep stack neutral
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| 256 |
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push h ! send to bus
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| 257 |
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pop h ! keep stack neutral
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| 258 |
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inr h
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| 259 |
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inr h ! a = 3, no zero, no sign, even parity, no AC,
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| 260 |
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! carry x
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| 261 |
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push psw ! send to bus
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| 262 |
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pop psw ! keep stack neutral
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| 263 |
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push h ! send to bus
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| 264 |
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pop h ! keep stack neutral
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| 265 |
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mvi h,$0f ! a = $0f
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| 266 |
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inr h ! a = $10, no zero, no sign, odd parity, AC
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| 267 |
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push psw ! send to bus
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| 268 |
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pop psw ! keep stack neutral
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| 269 |
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push h ! send to bus
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| 270 |
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pop h ! keep stack neutral
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| 271 |
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mvi h,$fe ! a = $fe
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| 272 |
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inr h ! a = $ff, no zero, sign, even parity, no AC
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| 273 |
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push psw ! send to bus
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| 274 |
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pop psw ! keep stack neutral
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| 275 |
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push h ! send to bus
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| 276 |
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pop h ! keep stack neutral
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| 277 |
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inr h ! a = $00, zero, no sign, even parity, AC
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| 278 |
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push psw ! send to bus
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| 279 |
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pop psw ! keep stack neutral
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| 280 |
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push h ! send to bus
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| 281 |
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pop h ! keep stack neutral
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| 282 |
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!
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| 283 |
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! inr l
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| 284 |
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!
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| 285 |
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mvi l,$00 ! a = 0
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| 286 |
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inr l ! a = 1, no zero, no sign, odd parity, no AC,
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| 287 |
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! carry x
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| 288 |
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push psw ! send to bus
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| 289 |
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pop psw ! keep stack neutral
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| 290 |
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push h ! send to bus
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| 291 |
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pop h ! keep stack neutral
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| 292 |
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inr l ! a = 1, no zero, no sign, odd parity, no AC,
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| 293 |
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! carry x
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| 294 |
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push psw ! send to bus
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| 295 |
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pop psw ! keep stack neutral
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| 296 |
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push h ! send to bus
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| 297 |
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pop h ! keep stack neutral
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| 298 |
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inr l
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| 299 |
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inr l ! a = 3, no zero, no sign, even parity, no AC,
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| 300 |
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! carry x
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| 301 |
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push psw ! send to bus
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| 302 |
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pop psw ! keep stack neutral
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| 303 |
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push h ! send to bus
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| 304 |
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pop h ! keep stack neutral
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| 305 |
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mvi l,$0f ! a = $0f
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| 306 |
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inr l ! a = $10, no zero, no sign, odd parity, AC
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| 307 |
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push psw ! send to bus
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| 308 |
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pop psw ! keep stack neutral
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| 309 |
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push h ! send to bus
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| 310 |
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pop h ! keep stack neutral
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| 311 |
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mvi l,$fe ! a = $fe
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| 312 |
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inr l ! a = $ff, no zero, sign, even parity, no AC
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| 313 |
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push psw ! send to bus
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| 314 |
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pop psw ! keep stack neutral
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| 315 |
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push h ! send to bus
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| 316 |
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pop h ! keep stack neutral
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| 317 |
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inr l ! a = $00, zero, no sign, even parity, AC
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| 318 |
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push psw ! send to bus
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| 319 |
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pop psw ! keep stack neutral
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| 320 |
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push h ! send to bus
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| 321 |
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pop h ! keep stack neutral
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| 322 |
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!
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| 323 |
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! dcr a
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| 324 |
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!
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| 325 |
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mvi a,$00 ! a = $00
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| 326 |
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dcr a ! a = $ff, no zero, sign, even parity, no AC,
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| 327 |
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! carry x
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| 328 |
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push psw ! send to bus
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| 329 |
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pop psw ! keep stack neutral
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| 330 |
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dcr a ! a = $fe, no zero, sign, odd parity, no AC,
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| 331 |
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push psw ! send to bus
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| 332 |
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pop psw ! keep stack neutral
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| 333 |
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mvi a,$10 ! a = $10
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| 334 |
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dcr a ! a = $0f, no zero, no sign, odd parity, AC
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| 335 |
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push psw ! send to bus
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| 336 |
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pop psw ! keep stack neutral
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| 337 |
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mvi a,$01 ! a = $01
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| 338 |
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dcr a ! a = $00, zero, no sign, even parity, no AC
|
| 339 |
|
|
push psw ! send to bus
|
| 340 |
|
|
pop psw ! keep stack neutral
|
| 341 |
|
|
|
| 342 |
|
|
|
| 343 |
|
|
|
| 344 |
|
|
|
| 345 |
|
|
|
