projects / z180-stamp-cpm3.git / blame
| 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 | 40 | ff.init:\r |
| ea5293bb | 41 | ld ix,ci.fifo\r |
| ea5293bb L |
42 | call bufinit\r |
| 43 | ld ix,co.fifo\r | |
| ea5293bb L |
44 | jp bufinit\r |
| 45 | \r | |
| 46 | ;--------------------------------------------------------------\r | |
| 40df51ae | 47 | ; Input status\r |
| ea5293bb | 48 | \r |
| 2a413c0d | 49 | dseg\r |
| ea5293bb L |
50 | ff.ist:\r |
| 51 | push ix\r | |
| 52 | ld ix,(fifolst+ici) ;\r | |
| d6829fd3 | 53 | call ff_empty\r |
| ea5293bb | 54 | pop ix\r |
| ea5293bb L |
55 | ret\r |
| 56 | \r | |
| 40df51ae | 57 | ;--------------------------------------------------------------\r |
| 6dd88c25 | 58 | ; Get an input character\r |
| 40df51ae | 59 | \r |
| ea5293bb L |
60 | ff.in:\r |
| 61 | push ix\r | |
| 62 | ld ix,(fifolst+ici) ;\r | |
| d6829fd3 | 63 | call ff_get\r |
| ea5293bb L |
64 | pop ix\r |
| 65 | ret\r | |
| 66 | \r | |
| 67 | ;--------------------------------------------------------------\r | |
| 40df51ae | 68 | ; Output status\r |
| ea5293bb L |
69 | \r |
| 70 | ff.ost:\r | |
| 71 | push ix\r | |
| 40df51ae | 72 | ld ix,(fifolst+ico) ;\r |
| d6829fd3 | 73 | call ff_full\r |
| ea5293bb | 74 | pop ix\r |
| ea5293bb L |
75 | ret\r |
| 76 | \r | |
| 77 | \r | |
| 40df51ae L |
78 | ;--------------------------------------------------------------\r |
| 79 | ; put character in c in buffer\r | |
| 80 | ; destroys hl, bc\r | |
| 81 | ; returns output char in a\r | |
| ea5293bb L |
82 | \r |
| 83 | ff.out:\r | |
| 40df51ae L |
84 | push ix ;\r |
| 85 | ld ix,(fifolst+ico) ;\r | |
| d6829fd3 | 86 | call ff_put\r |
| 40df51ae | 87 | out (AVRINT6),a ; tell monitor\r |
| 40df51ae | 88 | pop ix ;\r |
| d6829fd3 | 89 | ret\r |
| ea5293bb L |
90 | \r |
| 91 | end\r |