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[/] [tv80/] [trunk/] [tests/] [ivec_flags.ast] - Blame information for rev 99

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; test of interrupt vector flags
;
; initializes a memory region and then transfers that region
; to an accumulator
 
    .module otir
 
;--------------------------------------------------------
; special function registers
;--------------------------------------------------------
_sim_ctl_port   =       0x0080
_msg_port       =       0x0081
_timeout_port   =       0x0082
_max_timeout_low        =       0x0083
_max_timeout_high       =       0x0084
_intr_cntdwn    =       0x0090
_cksum_value    =       0x0091
_cksum_accum    =       0x0092
_inc_on_read    =       0x0093
 
    .area INIT (ABS)
    .org  0
 
    jp      init
 
 
init:
    ld      sp, #0xffff
 
    ;--------------------------------------------------
    ; test S flag
 
    ; test for s set on negative values
    ld      a, #0xff
    ld      i, a
    ld      a, i   ; S should be set
    jp      p, test_fail
 
    ld      a, #0xff
    ld      r, a
    ld      a, r   ; S should be set
    jp      p, test_fail
 
    ; test for s clear on positive values
    ld      a, #0x20
    ld      i, a
    ld      a, i   ; S should be clear
    jp      m, test_fail
 
    ; test for s clear on positive values
    ld      a, #0x20
    ld      r, a
    ld      a, r   ; S should be clear
    jp      m, test_fail
 
 
    ;--------------------------------------------------
    ; test Z flag
 
    ; test for z set on zero values
    ld      a, #0
    ld      i, a
    ld      a, i   ; S should be set
    jp      nz, test_fail
 
    ld      a, #0
    ld      r, a
    ld      a, r   ; S should be set
    jp      nz, test_fail
 
    ; test for s clear on positive values
    ld      a, #0x20
    ld      i, a
    ld      a, i   ; S should be clear
    jp      z, test_fail
 
    ; test for s clear on positive values
    ld      a, #0x20
    ld      r, a
    ld      a, r   ; S should be clear
    jp      z, test_fail
 
    ;--------------------------------------------------
    ; test H flag
 
    ; by spec the H flag is not in the flags register,
    ; so this bit is difficult to test
 
    ;--------------------------------------------------
    ; test P/V flag
 
    ; TBD
 
    ;--------------------------------------------------
    ; test N flag
 
    neg               ; sets the N flag
    ld      a, i      ; clears N flag
    push    af
    pop     bc        ; N should be bit 4 of C
    ld      a, c
    and     #0x10
    jp      nz, test_fail
 
    neg               ; sets the N flag
    ld      a, r      ; clears N flag
    push    af
    pop     bc        ; N should be bit 4 of C
    ld      a, c
    and     #0x10
    jp      nz, test_fail
 
    ;--------------------------------------------------
    ; test C flag
    ; should not be affected by this op
 
    scf
    ld      a, i
    ld      a, r
    jp      nc, test_fail
 
    ccf
    ld      a, i
    ld      a, r
    jp      c, test_fail
 
test_pass:
    ;; finish simulation with test passed
    ld      a, #1
    out     (_sim_ctl_port), a
    halt
 
test_fail:
    ld      a, #2
    out     (_sim_ctl_port), a
    ret
 
reset_timeout:
    ld      a, #2
    out     (_timeout_port), a
    ret
 
    .org    0x8000
 
dbuf:
    .ds     256
 

Line No.	Rev	Author	Line
1	99	ghutchis	`; test of interrupt vector flags`
2			`;`
3			`; initializes a memory region and then transfers that region`
4			`; to an accumulator`
5
6			`.module otir`
7
8			`;--------------------------------------------------------`
9			`; special function registers`
10			`;--------------------------------------------------------`
11			`_sim_ctl_port = 0x0080`
12			`_msg_port = 0x0081`
13			`_timeout_port = 0x0082`
14			`_max_timeout_low = 0x0083`
15			`_max_timeout_high = 0x0084`
16			`_intr_cntdwn = 0x0090`
17			`_cksum_value = 0x0091`
18			`_cksum_accum = 0x0092`
19			`_inc_on_read = 0x0093`
20
21			`.area INIT (ABS)`
22			`.org 0`
23
24			`jp init`
25
26
27			`init:`
28			`ld sp, #0xffff`
29
30			`;--------------------------------------------------`
31			`; test S flag`
32
33			`; test for s set on negative values`
34			`ld a, #0xff`
35			`ld i, a`
36			`ld a, i ; S should be set`
37			`jp p, test_fail`
38
39			`ld a, #0xff`
40			`ld r, a`
41			`ld a, r ; S should be set`
42			`jp p, test_fail`
43
44			`; test for s clear on positive values`
45			`ld a, #0x20`
46			`ld i, a`
47			`ld a, i ; S should be clear`
48			`jp m, test_fail`
49
50			`; test for s clear on positive values`
51			`ld a, #0x20`
52			`ld r, a`
53			`ld a, r ; S should be clear`
54			`jp m, test_fail`
55
56
57			`;--------------------------------------------------`
58			`; test Z flag`
59
60			`; test for z set on zero values`
61			`ld a, #0`
62			`ld i, a`
63			`ld a, i ; S should be set`
64			`jp nz, test_fail`
65
66			`ld a, #0`
67			`ld r, a`
68			`ld a, r ; S should be set`
69			`jp nz, test_fail`
70
71			`; test for s clear on positive values`
72			`ld a, #0x20`
73			`ld i, a`
74			`ld a, i ; S should be clear`
75			`jp z, test_fail`
76
77			`; test for s clear on positive values`
78			`ld a, #0x20`
79			`ld r, a`
80			`ld a, r ; S should be clear`
81			`jp z, test_fail`
82
83			`;--------------------------------------------------`
84			`; test H flag`
85
86			`; by spec the H flag is not in the flags register,`
87			`; so this bit is difficult to test`
88
89			`;--------------------------------------------------`
90			`; test P/V flag`
91
92			`; TBD`
93
94			`;--------------------------------------------------`
95			`; test N flag`
96
97			`neg ; sets the N flag`
98			`ld a, i ; clears N flag`
99			`push af`
100			`pop bc ; N should be bit 4 of C`
101			`ld a, c`
102			`and #0x10`
103			`jp nz, test_fail`
104
105			`neg ; sets the N flag`
106			`ld a, r ; clears N flag`
107			`push af`
108			`pop bc ; N should be bit 4 of C`
109			`ld a, c`
110			`and #0x10`
111			`jp nz, test_fail`
112
113			`;--------------------------------------------------`
114			`; test C flag`
115			`; should not be affected by this op`
116
117			`scf`
118			`ld a, i`
119			`ld a, r`
120			`jp nc, test_fail`
121
122			`ccf`
123			`ld a, i`
124			`ld a, r`
125			`jp c, test_fail`
126
127			`test_pass:`
128			`;; finish simulation with test passed`
129			`ld a, #1`
130			`out (_sim_ctl_port), a`
131			`halt`
132
133			`test_fail:`
134			`ld a, #2`
135			`out (_sim_ctl_port), a`
136			`ret`
137
138			`reset_timeout:`
139			`ld a, #2`
140			`out (_timeout_port), a`
141			`ret`
142
143			`.org 0x8000`
144
145			`dbuf:`
146			`.ds 256`
147

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[/] [tv80/] [trunk/] [tests/] [ivec_flags.ast] - Blame information for rev 99