git.joshuawise.com / fpgaboy.git / blame
| Commit | Line | Data |
|---|---|---|
| faa9ae6f JW |
1 | SECTION "wee",HOME[$0] |
| 2 | outlp: ; Read a packet out if one is waiting. | |
| 3 | ld a, [$FF69] | |
| 4 | ld h, a | |
| 5 | call puthex+$D800 | |
| 6 | ld a, [$FF69] | |
| 7 | ld l, a | |
| 8 | call puthex+$D800 | |
| 9 | rxlp: ld a, h | |
| 10 | or l | |
| 11 | jr z, tx | |
| 12 | dec hl | |
| 13 | ld a, [$FF69] | |
| 14 | call puthex+$D800 | |
| 15 | jr rxlp | |
| 16 | tx: ld a, 13 | |
| 17 | call putc+$D800 | |
| 18 | ld a, 10 | |
| 19 | call putc+$D800 | |
| 20 | ld a, [$FF51] | |
| 21 | ld [$D800+diqing], a | |
| 22 | ld a, $0 | |
| 23 | ld [$FF69], a | |
| 24 | ld a, $60 | |
| 25 | ld c, a | |
| 26 | ld hl, $D800+bleep | |
| 27 | ld [$FF69], a | |
| 28 | lp: ld a, [hli] | |
| 29 | ld [$FF69], a | |
| 30 | dec c | |
| 31 | jr nz, lp | |
| 32 | ld hl, $0000 | |
| 33 | dl1: dec hl | |
| 34 | ld a, [$FF68] | |
| 35 | ld [$FF51], a | |
| 36 | ld a, h | |
| 37 | or l | |
| 38 | jr nz, dl1 | |
| 39 | jr outlp | |
| 40 | bleep: db $FF, $FF, $FF, $FF, $FF, $FF | |
| 41 | db $00, $12, $34, $56, $78, $90 | |
| 42 | db $08, $00 | |
| 43 | ||
| 44 | db $45, $00, $00, $2E, $00, $00, $00, $00, $80, $11 | |
| 45 | db $26, $bd | |
| 46 | db $0A, $00, $00, $02 | |
| 47 | db $0A, $00, $00, $01 | |
| 48 | ||
| 49 | db $04, $00, $04, $00, $00, $1A, $00, $00 | |
| 50 | ||
| 51 | diqing: db $01, $02, $03, $04, $05, $06, $07, $08 | |
| 52 | ||
| 53 | putc: | |
| 54 | push af | |
| 55 | .waitport: | |
| 56 | ld a,[$FF53] | |
| 57 | and $01 | |
| 58 | jr nz,.waitport | |
| 59 | pop af | |
| 60 | ld [$FF52],a | |
| 61 | ret | |
| 62 | ||
| 63 | puthex: ; Put two hex nibbles to the serial console. | |
| 64 | push bc | |
| 65 | push hl | |
| 66 | push af | |
| 67 | swap a | |
| 68 | and $0F | |
| 69 | ld hl,hex+$D800 | |
| 70 | ld b,0 | |
| 71 | ld c,a | |
| 72 | add hl,bc | |
| 73 | ld a, [hl] | |
| 74 | call putc+$D800 | |
| 75 | pop af | |
| 76 | and $0F | |
| 77 | ld hl,hex+$D800 | |
| 78 | ld c,a | |
| 79 | add hl,bc | |
| 80 | ld a, [hl] | |
| 81 | call putc+$D800 | |
| 82 | pop hl | |
| 83 | pop bc | |
| 84 | ret | |
| 85 | hex: db "0123456789ABCDEF" | |
| 86 | ||
| 87 | section "anus", HOME[$100] | |
| 88 | nop |