]>
Commit | Line | Data |
---|---|---|
ea5293bb L |
1 | page 255\r |
2 | .z80\r | |
3 | \r | |
4 | ;\r | |
5 | ; FIFO channels for communication with avr\r | |
6 | ;\r | |
6dd88c25 | 7 | global ff_dev\r |
ea5293bb | 8 | \r |
d6829fd3 | 9 | extrn ff_empty,ff_get,ff_full,ff_put\r |
ea5293bb L |
10 | extrn bufinit,fifolst\r |
11 | \r | |
12 | include config.inc\r | |
13 | if CPU_Z180\r | |
3c56f4c2 | 14 | maclib z180reg.inc\r |
ea5293bb L |
15 | endif\r |
16 | \r | |
2a413c0d | 17 | dseg\r |
ea5293bb | 18 | mkbuf ci.fifo_id, ci.fifo, ci.fifo_len\r |
b43b4662 | 19 | mkbuf co.fifo_id, co.fifo, co.fifo_len\r |
ea5293bb | 20 | \r |
40df51ae L |
21 | ici equ ci.fifo_id * 2\r |
22 | ico equ co.fifo_id * 2\r | |
ea5293bb | 23 | \r |
6dd88c25 L |
24 | ;--------------------------------------------------------------\r |
25 | \r | |
26 | dseg\r | |
27 | \r | |
28 | dw ff.out\r | |
29 | dw ff.ost\r | |
30 | dw ff.in\r | |
31 | dw ff.ist\r | |
32 | dw ff.init\r | |
33 | ff_dev:\r | |
ea5293bb L |
34 | \r |
35 | ;--------------------------------------------------------------\r | |
36 | \r | |
37 | ; Init Serial I/O for console input and output\r | |
38 | ;\r | |
50f3b8f0 | 39 | dseg\r |
ea5293bb L |
40 | ff.init:\r |
41 | ld a,(INIDONE)\r | |
42 | cp INIDONEVAL\r | |
43 | ret z\r | |
44 | \r | |
45 | ld ix,ci.fifo\r | |
ea5293bb L |
46 | call bufinit\r |
47 | ld ix,co.fifo\r | |
ea5293bb L |
48 | jp bufinit\r |
49 | \r | |
50 | ;--------------------------------------------------------------\r | |
40df51ae | 51 | ; Input status\r |
ea5293bb | 52 | \r |
2a413c0d | 53 | dseg\r |
ea5293bb L |
54 | ff.ist:\r |
55 | push ix\r | |
56 | ld ix,(fifolst+ici) ;\r | |
d6829fd3 | 57 | call ff_empty\r |
ea5293bb | 58 | pop ix\r |
ea5293bb L |
59 | ret\r |
60 | \r | |
40df51ae | 61 | ;--------------------------------------------------------------\r |
6dd88c25 | 62 | ; Get an input character\r |
40df51ae | 63 | \r |
ea5293bb L |
64 | ff.in:\r |
65 | push ix\r | |
66 | ld ix,(fifolst+ici) ;\r | |
d6829fd3 | 67 | call ff_get\r |
ea5293bb L |
68 | pop ix\r |
69 | ret\r | |
70 | \r | |
71 | ;--------------------------------------------------------------\r | |
40df51ae | 72 | ; Output status\r |
ea5293bb L |
73 | \r |
74 | ff.ost:\r | |
75 | push ix\r | |
40df51ae | 76 | ld ix,(fifolst+ico) ;\r |
d6829fd3 | 77 | call ff_full\r |
ea5293bb | 78 | pop ix\r |
ea5293bb L |
79 | ret\r |
80 | \r | |
81 | \r | |
40df51ae L |
82 | ;--------------------------------------------------------------\r |
83 | ; put character in c in buffer\r | |
84 | ; destroys hl, bc\r | |
85 | ; returns output char in a\r | |
ea5293bb L |
86 | \r |
87 | ff.out:\r | |
40df51ae L |
88 | push ix ;\r |
89 | ld ix,(fifolst+ico) ;\r | |
d6829fd3 | 90 | call ff_put\r |
40df51ae | 91 | out (AVRINT6),a ; tell monitor\r |
40df51ae | 92 | pop ix ;\r |
d6829fd3 | 93 | ret\r |
ea5293bb L |
94 | \r |
95 | end\r |