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diag.asm
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diag.asm
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; diag.asm test 8080 opcodes
; nothing special about this - just a brute force
; op code tester for the 8080.
; This test runs TESTCOUNT times, printing a dot (.) for each pass.
; Any fails will stop the test. At the end of a successful run,
; a success message will be displayed and the program will stop.
; (C) k theis 2019 MIT license applies
; program defines - change as needed for your use
STACK equ 7f00h
STACK2 equ 6543h
SOUT equ 1
EOL equ feh
CR equ 0dh
LF equ 0ah
TESTCOUNT equ 40
org 0
start lxi sp STACK
mvi a TESTCOUNT
sta CNTR
jmp diag
error ; show error msg and halt
lxi h errmsg
call print
lxi h failedcode
call print
lda ERRCODE ; retrive the number of the failed routine
out SOUT ; show code
mvi a CR ; and send a CR/LF
out SOUT
mvi a LF
out SOUT
hlt
ok ; show pass msg and halt
lxi h okmsg
call print
ok1 jmp ok1
print ; send message to serial port
mov a,m
cpi EOL
rz
out SOUT
inx h
jmp print
okmsg db CR
db LF
db "All tests Passed"
db CR
db LF
db EOL
errmsg db "Tests Failed"
db CR
db LF
db EOL
failedcode db "Routine that failed: "
db EOL
diag ; start of tests
; ----- Data Transfer Group -----
mvi a 'A'
sta ERRCODE ; ERROR CODE A
mvi a 55h ; test mov, cmp NOTE: No flags affected in this group
mov b,a
mov c,b
mov d,c
mov e,d
mov l,e
mov h,l
cmp b
jnz error
cmp c
jnz error
cmp d
jnz error
cmp e
jnz error
cmp h
jnz error
cmp l
jnz error
lxi h TEMPH
mov m,a
cmp m
jnz error
mvi a 'B'
sta ERRCODE ; ERROR CODE B
;
mvi a 55h ; mvi
mvi b 55h
mvi c 55h
mvi d 55h
mvi e 55h
mvi h 55h
mvi l 55h
cmp b
jnz error
cmp c
jnz error
cmp d
jnz error
cmp e
jnz error
cmp h
jnz error
cmp l
jnz error
lxi h TEMPH
mvi m 55h
cmp m
jnz error
mov m,a
cmp m
jnz error
mvi a 'C'
sta ERRCODE ; ERROR CODE C
mvi a aah ; memory
mov b,a
mov m,b
cmp m
jnz error
inr a
mov c,a
mov m,c
cmp m
jnz error
inr a
mov d,a
mov m,d
cmp m
jnz error
inr a
mov e,a
mov m,e
cmp m
jnz error
mvi a 55h
mov m,a
mov b,m
cmp b
jnz error
mov c,m
cmp c
jnz error
mov d,m
cmp d
jnz error
mov e,m
cmp e
jnz error
mvi a 'D'
sta ERRCODE ; ERROR CODE D
mvi a 55h ; lhld
sta TMPL
mvi a aah
sta TMPH
lhld TMPL
cmp h
jnz error
mvi a 55h
cmp l
jnz error
mvi a 'E'
sta ERRCODE ; ERROR CODE E
xra a ; lhld, shld
mov h,a
mov l,a
shld TMPL
mvi h 1
mvi l 2
lhld TMPL
cmp h
jnz error
cmp h
jnz error
cmp l
jnz error
mvi a 'F'
sta ERRCODE ; ERROR CODE F
lxi h TEMPH ; ldax, stax, xchg
mvi m 55h
xchg
ldax d
cpi 55h
jnz error
lxi h TEMPH
mvi m aah
mov b,h
mov c,l
mov d,h
mov e,l
ldax b
cpi aah
jnz error
ldax d
cpi aah
jnz error
; ----- Arithmetic Group -----
mvi a 'G'
sta ERRCODE ; ERROR CODE G
mvi a 55h
mvi b 55h
mvi c 55h
mvi d 55h
mvi e 55h
mvi h 55h
mvi l 55h
;
add b ; test add
jp error ; Plus: should be minus
jc error ; Carry : clear
jz error ; Zero: clear
jpo error ; 55h, parity is even (P=1)
cpi 0aah
jnz error ; Z: set
mvi a 0 ; test positive
add b
jm error
jc error
jz error
mvi a abh ; overflow test
add b ; should be 00 in A w/CY set
jpe error ; parity odd
jnc error
jnz error
jm error
; flags should work, no need to test flags again for add
mvi a 55h
add c
cpi aah
jnz error
mvi a 55h
add d
cpi aah
jnz error
mvi a 55h
add e
cpi aah
jnz error
mvi a 55h
add h
cpi aah
jnz error
mvi a 55h
add l
cpi aah
jnz error
; test add m
lxi h TEMPH
mvi m 55h
mvi a 55h
add m
cpi aah
jnz error
mvi a 'H'
sta ERRCODE ; ERROR CODE H
; test adi
mvi a 55h
adi 55h
jc error
jz error
jp error
jpo error
cpi aah
jnz error
mvi a 'I'
sta ERRCODE ; ERROR CODE I
; test adc
mvi a 55h
mvi b 55h
stc
adc b
jc error
jp error
jz error
jpe error
cpi abh
jnz error
mvi a 55h
mvi c 55h
stc
adc c
cpi abh
jnz error
mvi a 55h
mvi d 55h
stc
adc d
cpi abh
jnz error
mvi a 55h
mvi e 55h
stc
adc e
cpi abh
jnz error
mvi a 55h
mvi h 55h
stc
adc h
cpi abh
jnz error
mvi a 55h
mvi l 55h
stc
adc l
cpi abh
jnz error
mvi a 'J'
sta ERRCODE ; ERROR CODE J
; test adc m
lxi h TEMPH
mvi m, 55h
mvi a 55h
stc
adc m
jc error ; CY=0
jp error ; S=1
jpe error ; P=0
jz error ; Z=0
cpi abh
jnz error
mvi a 'K'
sta ERRCODE ; ERROR CODE K
; test aci
mvi a 55h
stc
aci 55h
jz error ; Z=0
jp error ; S=1
jpe error ; P=0
jc error ; CY=0
cpi abh
jnz error
mvi a 'L'
sta ERRCODE ; ERROR CODE L
; test sub
mvi a 55h
mvi b 1
sub b
jc error ; CY=0
jz error ; Z=0
jm error ; S=0
jpe error ; P=0
cpi 54h
jnz error
mov c,b
sub c
jc error
jz error
jm error
jpo error
cpi 53h
jnz error
mov d,b
sub d
cpi 52h
jnz error
mov e,b
sub e
cpi 51h
jnz error
mov h,b
sub h
cpi 50h
jnz error
mov l,b
sub l
cpi 4fh
jnz error
; test sub w/underflow
xra a
mvi b 1
sub b ; A=ffh
jnc error ; CY=1
jp error ; S=1
jpo error ; P=1
jz error ; Z=0
cpi ffh
jnz error
mvi a 'M'
sta ERRCODE ; ERROR CODE M
; test sub m
lxi h TEMPH
mvi m 1
mvi a 55h
sub m
jz error ; Z=0
jc error ; CY=0
jm error ; S=0
jpe error ; P=0
cpi 54h
jnz error
mvi a 'N'
sta ERRCODE ; ERROR CODE N
; test sui
mvi a 55h
sui 1
jz error ; Z=0
jc error ; CY=0
jm error ; S=0
jpe error ; P=0
cpi 54h
jnz error
; sui underflow
xra a
sui 1
jnc error ; CY=1
jp error ; S=1
jpo error ; P=1
cpi ffh
jnz error ; A=ffh
mvi a 'O'
sta ERRCODE ; ERROR CODE O
; test sbb
mvi a 55h
mvi b 1
mov c,b
mov d,b
mov e,b
mov h,b
mov l,b
stc
sbb b
jz error ; Z=0
jc error ; CY=0
jm error ; S=0
jpo error ; P=1
cpi 53h
jnz error
stc
sbb c
cpi 51h
jnz error
stc
sbb d
cpi 4fh
jnz error
stc
sbb e
cpi 4dh
jnz error
stc
sbb h
cpi 4bh
jnz error
stc
sbb l
cpi 49h
jnz error
mvi a 'P'
sta ERRCODE ; ERROR CODE P
; test sbb m
lxi h TEMPH
mvi m 1
mvi a 55h
stc
sbb m
jz error ; Z=0
jc error ; CY=0
jm error ; S=0
jpo error ; P=1
cpi 53h
jnz error
mvi a 'Q'
sta ERRCODE ; ERROR CODE Q
; test sbi
mvi a 55h
stc
sbi 1
jz error ; Z=0
jc error ; CY=0
jm error ; S=0
jpo error ; P=1
cpi 53h
jnz error
mvi a 'R'
sta ERRCODE ; ERROR CODE R
; test for underflow
xra a ; A=0
sbi 1 ; A=ffh
jnc error ; CY=1
jpo error ; P=1
jz error ; Z=0
jp error ; S=1
; test inr
; basic tests (no flags)
mvi a 1
mov b,a
mov c,b
mov d,c
mov e,d
mov h,e
mov l,h
inr a
cpi 2
jnz error
inr b
cmp b
jnz error
inr c
cmp c
jnz error
inr d
cmp d
jnz error
inr e
cmp e
jnz error
inr h
cmp h
jnz error
inr l
cmp l
jnz error
; test flags
xra a
inr a ; A=1
jz error ; Z=0
jm error ; S=0
jpe error ; P=0
cpi 1
jnz error
mvi a ffh
inr a ; A=0
jnz error ; Z=1
jpe error ; P=0 (*)
jm error ; S=0
cpi 0
jnz error
mvi a 'S'
sta ERRCODE ; ERROR CODE S
; test inr M
mvi a 2
lxi h TEMPH
mvi m 1
inr m
cmp m
jnz error
mvi a 'T'
sta ERRCODE ; ERROR CODE T
; test dcr
mvi a 1
dcr a
jnz error
mvi b 1
dcr b
jnz error
mvi c 1
dcr c
jnz error
mvi d 1
dcr d
jnz error
mvi e 1
dcr e
jnz error
mvi h 1
dcr h
jnz error
mvi l 1
dcr l
jnz error
; test flags
xra a
dcr a ; A=ffh
jz error ; Z=0
jp error ; S=1
jpo error ; P=1
cpi ffh
jnz error
mvi a 'U'
sta ERRCODE ; ERROR CODE U
; test dcr M
lxi h TEMPH
mvi m 1
dcr m
jnz error ; Z=0
jpe error ; P=0
jm error ; S=0
mvi a 'V'
sta ERRCODE ; ERROR CODE V
; test INX rp
lxi b ffffh
inx b
xra a
cmp b
jnz error
cmp c
jnz error
lxi d ffffh
inx d
xra a
cmp d
jnz error
cmp e
jnz error
lxi h ffffh
inx h
xra a
cmp h
jnz error
cmp l
jnz error
mvi a 'W'
sta ERRCODE
; test DCX rp
lxi b 0000h
dcx b
mov a,b
cpi ffh
jnz error
mov a,c
cpi ffh
jnz error
lxi d 0000h
dcx d
mov a,d
cpi ffh
jnz error
mov a,e
cpi ffh
jnz error
lxi h 0000h
dcx h
mov a,h
cpi ffh
jnz error
mov a,l
cpi ffh
jnz error
mvi a 'X'
sta ERRCODE ; ERROR CODE X
; test DAD rp
lxi h 5555h
lxi b 5555h
dad b
mov a,h
cpi aah
jnz error
mov a,l
cpi aah
jnz error
lxi d 1111h
dad d
mov a,h
cpi bbh
jnz error
mov a,l
cpi bbh
jnz error
lxi h 0101h
dad h
mov a,h
cpi 02h
jnz error
mov a,l
cpi 02h
jnz error
mvi a 'Y'
sta ERRCODE ; ERROR CODE Y
; test daa
; I don't understands DAA enough to test it yet
mvi a 'Z'
sta ERRCODE ; ERROR CODE Z
; test ANA r
mvi a a5h
push psw
mvi b 6ch
mov c,b
mov d,b
mov e,b
mov h,b
mov l,b
ana b
jc error ; CY cleared after ana
cpi 24h
jnz error
pop psw
push psw
ana c
jc error
cpi 24h
jnz error
pop psw
push psw
ana d
jc error
cpi 24h
jnz error
pop psw
push psw
ana e
jc error
cpi 24h
jnz error
pop psw
ana h
jc error
cpi 24h
jnz error
; test flags
xra a
jnz error
mvi a f0h
mvi b 0fh
ana b
jnz error ; Z=1
mvi a f0h
mvi b ffh
ana b
jp error ; S=1
jpo error ; P=1
jz error ; Z=0
mvi a ffh
mvi b ffh
ana b
jp error ; S=1
jpo error ; P=1
cpi ffh
jnz error
mvi a 05h
mvi c 05h
ana c
jz error ; Z=0
jpo error ; P=1
jc error ; CY=0 (always)
jm error ; S=0
mvi a 'a'
sta ERRCODE ; ERROR CODE a
; test ANA m
lxi h TEMPH
mvi a a5h
mvi m 6ch
ana m
jc error
jz error
jm error
jpo error
cpi 24h
jnz error
mvi a 'b'
sta ERRCODE ; ERROR CODE b
; test ANI
mvi a a5h
ani 6ch
jc error
jz error
jpo error
jm error
cpi 24h
jnz error
mvi a 'c'
sta ERRCODE ;; ERROR CODE c
; test xra
mvi a cch
push psw
mvi b 66h
mov c,b
mov d,b
mov e,b
mov h,b
mov l,b
xra a
jc error ; tested xra earlier
cpi 0
jnz error
pop psw
push psw
xra b
jc error
cpi aah
jnz error
pop psw
push psw
xra c
jc error
cpi aah
jnz error
pop psw
push psw
xra c
jc error
cpi aah
jnz error
pop psw
push psw
xra d
jc error
cpi aah
jnz error
pop psw
push psw
xra e
jc error
cpi aah
jnz error
pop psw
push psw
xra h
jc error
cpi aah
jnz error
pop psw
xra l
jc error
cpi aah
jnz error
mvi a 'd'
sta ERRCODE ; ERROR CODE d
; test xra m
lxi h TEMPH
mvi m 66h
mvi a cch
xra m
jp error
jpo error
jz error
jc error
cpi aah
jnz error
mvi a 'e'
sta ERRCODE ; ERROR CODE e
; test XRI
mvi a cch
xri 66h
jc error
jz error
jpo error
jp error
cpi aah
jnz error
mvi a 'f'
sta ERRCODE ; ERROR CODE f
; test ora
mvi a f0h
push psw
mvi b 0fh
mov c,b
mov d,b
mov e,b
mov h,b
mov l,b
ora b
jc error ; CY=0
jz error ; Z=0
jpo error ; P=1
jp error ; S=1
inr a
jnz error
pop psw