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gp2io/bufferedio_Output.txt
Charles Mangin 05e290b2a5 twiddling bits
2017-04-10 13:09:57 -04:00

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------+------------------------+-------------+----+---------+------+-----------------------+-------------------------------------------------------------------
Line | # File Line | Line Type | MX | Reloc | Size | Address Object Code | Source Code
------+------------------------+-------------+----+---------+------+-----------------------+-------------------------------------------------------------------
1 | 1 bufferedio.s 1 | Directive | 11 | | 0 | 00/8000 | ORG $800
2 | 1 bufferedio.s 2 | Equivalence | 11 | | 0 | 00/0800 | BUFFERLENGTH EQU $08
3 | 1 bufferedio.s 3 | Equivalence | 11 | | 0 | 00/0800 | INPUTLENGTH EQU $07
4 | 1 bufferedio.s 4 | Equivalence | 11 | | 0 | 00/0800 | INPUTPTR EQU $06
5 | 1 bufferedio.s 5 | Equivalence | 11 | | 0 | 00/0800 | SENDBYTE EQU $0300
6 | 1 bufferedio.s 6 | Equivalence | 11 | | 0 | 00/0800 | READBYTE EQU $034A
7 | 1 bufferedio.s 7 | Equivalence | 11 | | 0 | 00/0800 | WAIT EQU $FCA8
8 | 1 bufferedio.s 8 | Equivalence | 11 | | 0 | 00/0800 | PRINTCR EQU $FD8E
9 | 1 bufferedio.s 9 | Equivalence | 11 | | 0 | 00/0800 | PRINTBYTE EQU $FDED
10 | 1 bufferedio.s 10 | Equivalence | 11 | | 0 | 00/0800 | ANN2HI EQU $C05D
11 | 1 bufferedio.s 11 | Equivalence | 11 | | 0 | 00/0800 | ANN2LO EQU $C05C
12 | 1 bufferedio.s 12 | Equivalence | 11 | | 0 | 00/0800 | KEYBUFFER EQU $0200
13 | 1 bufferedio.s 13 | Empty | 11 | | 0 | 00/0800 |
14 | 1 bufferedio.s 14 | Code | 11 | | 3 | 00/0800 : 20 4B 08 | BUFFERIO JSR QUERYBUFFER ; start by querying the buffer length - is there anything waiting? returns with buffer length in $08
15 | 1 bufferedio.s 15 | Code | 11 | | 2 | 00/0803 : A9 80 | LDA #$80 ; load control byte $80 "send buffer bytes"
16 | 1 bufferedio.s 16 | Code | 11 | | 3 | 00/0805 : 20 00 03 | JSR {$0300} ; send control byte
17 | 1 bufferedio.s 17 | Code | 11 | | 2 | 00/0808 : A5 08 | LDA {$08} ; load buffer length (or however much buffer you want sent)
18 | 1 bufferedio.s 18 | Code | 11 | | 3 | 00/080A : 20 00 03 | JSR {$0300} ; send message length byte
19 | 1 bufferedio.s 19 | Code | 11 | | 2 | 00/080D : A9 28 | BETWEENBYTES LDA #$28 ; wait a moment (betweenbytes)
20 | 1 bufferedio.s 20 | Code | 11 | | 3 | 00/080F : 20 A8 FC | JSR {$FCA8} ; wait
21 | 1 bufferedio.s 21 | Code | 11 | | 3 | 00/0812 : 20 4A 03 | JSR {$034A} ; CTS - send byte
22 | 1 bufferedio.s 22 | Code | 11 | | 2 | 00/0815 : 09 80 | ORA #$80 ; clear byte 7 (for ASCII)
23 | 1 bufferedio.s 23 | Code | 11 | | 3 | 00/0817 : 20 ED FD | JSR {$FDED} ; display byte on screen
24 | 1 bufferedio.s 24 | Code | 11 | | 2 | 00/081A : C6 08 | DEC {$08} ; count down bytes (countdownbuffer)
25 | 1 bufferedio.s 25 | Code | 11 | | 2 | 00/081C : A5 08 | LDA {$08} ; load Accumulator with new buffer length
26 | 1 bufferedio.s 26 | Code | 11 | | 2 | 00/081E : D0 ED | BNE BETWEENBYTES ; if there's more to come, loop (betweenbytes)
27 | 1 bufferedio.s 27 | Code | 11 | | 3 | 00/0820 : 20 8E FD | JSR {$FD8E} ; last byte. print CF/LF
28 | 1 bufferedio.s 28 | Code | 11 | | 1 | 00/0823 : 60 | RTS ; return
29 | 1 bufferedio.s 29 | Empty | 11 | | 0 | 00/0824 |
30 | 1 bufferedio.s 30 | Code | 11 | | 3 | 00/0824 : 20 6A FD | GETLINE JSR $FD6A ; get line of input, input length in X reg
31 | 1 bufferedio.s 31 | Code | 11 | | 1 | 00/0827 : 8A | TXA ; get input length into Accumulator
32 | 1 bufferedio.s 32 | Code | 11 | | 2 | 00/0828 : 85 07 | STA {$07} ; put input length into $07
33 | 1 bufferedio.s 33 | Code | 11 | | 2 | 00/082A : A9 00 | CLEARPTR LDA #$00 ; load zero into Accumulator
34 | 1 bufferedio.s 34 | Code | 11 | | 2 | 00/082C : 85 06 | STA {$06} ; put zero into $06, keyboard buffer pointer
35 | 1 bufferedio.s 35 | Code | 11 | | 2 | 00/082E : A9 04 | LDA #$04 ; load Accumulator with control byte "write to buffer"
36 | 1 bufferedio.s 36 | Code | 11 | | 3 | 00/0830 : 20 00 03 | JSR {$0300} ; send control byte
37 | 1 bufferedio.s 37 | Code | 11 | | 2 | 00/0833 : A5 07 | LDA {$07} ; load input length from $07
38 | 1 bufferedio.s 38 | Code | 11 | | 3 | 00/0835 : 20 00 03 | JSR {$0300} ; send message length
39 | 1 bufferedio.s 39 | Code | 11 | | 2 | 00/0838 : A6 06 | LOADBUFFER LDX {$06} ; load X with keyboard buffer pointer (LOADBUFFER)
40 | 1 bufferedio.s 40 | Code | 11 | | 3 | 00/083A : BD 00 02 | LDA {$0200},X ; load Accumulator with bytes from keyboard buffer (start at $200)
41 | 1 bufferedio.s 41 | Code | 11 | | 2 | 00/083D : 29 7F | AND #$7F ; clear high bit (for ASCII on other end)
42 | 1 bufferedio.s 42 | Code | 11 | | 3 | 00/083F : 20 00 03 | JSR {$0300} ; send byte
43 | 1 bufferedio.s 43 | Code | 11 | | 2 | 00/0842 : E6 06 | INC {$06} ; increment keyboard buffer pointer
44 | 1 bufferedio.s 44 | Code | 11 | | 2 | 00/0844 : A5 06 | LDA {$06} ; load buffer pointer into Accumulator
45 | 1 bufferedio.s 45 | Code | 11 | | 2 | 00/0846 : C5 07 | CMP {$07} ; compare with message length
46 | 1 bufferedio.s 46 | Code | 11 | | 2 | 00/0848 : D0 EE | BNE LOADBUFFER ; if not at end of message, loop to (LOADBUFFER)
47 | 1 bufferedio.s 47 | Code | 11 | | 1 | 00/084A : 60 | RTS ; return
48 | 1 bufferedio.s 48 | Empty | 11 | | 0 | 00/084B |
49 | 1 bufferedio.s 49 | Code | 11 | | 2 | 00/084B : A9 40 | QUERYBUFFER LDA #$40 ; control byte for query buffer length
50 | 1 bufferedio.s 50 | Code | 11 | | 3 | 00/084D : 20 00 03 | JSR {$0300} ; send control byte
51 | 1 bufferedio.s 51 | Code | 11 | | 3 | 00/0850 : 20 5E 08 | JSR TWIDDLE ; wait routine - gives GP2IO time to receive bytes from serial
52 | 1 bufferedio.s 52 | Code | 11 | | 3 | 00/0853 : 8D 5C C0 | CTS STA {$C05C} ; set ANN2 to LOW (just in case it's floating high)
53 | 1 bufferedio.s 53 | Code | 11 | | 3 | 00/0856 : 20 4A 03 | JSR {$034A} ; CTS - ready for response byte with buffer length
54 | 1 bufferedio.s 54 | Code | 11 | | 2 | 00/0859 : F0 F0 | BEQ QUERYBUFFER ; if there's nothing in the buffer, loop until there is
55 | 1 bufferedio.s 55 | Code | 11 | | 2 | 00/085B : 85 08 | STA {$08} ; put the byte in $08
56 | 1 bufferedio.s 56 | Code | 11 | | 1 | 00/085D : 60 | RTS ; returns buffer length in $08 (BUFFERLENGTH)
57 | 1 bufferedio.s 57 | Empty | 11 | | 0 | 00/085E |
58 | 1 bufferedio.s 58 | Code | 11 | | 2 | 00/085E : A9 21 | TWIDDLE LDA #$21 ; ! (inverse)
59 | 1 bufferedio.s 59 | Code | 11 | | 3 | 00/0860 : 20 6F 08 | JSR PRINTCHAR ;
60 | 1 bufferedio.s 60 | Code | 11 | | 2 | 00/0863 : A9 2F | LDA #$2F ; /
61 | 1 bufferedio.s 61 | Code | 11 | | 3 | 00/0865 : 20 6F 08 | JSR PRINTCHAR ;
62 | 1 bufferedio.s 62 | Code | 11 | | 2 | 00/0868 : A9 2D | LDA #$2D ; -
63 | 1 bufferedio.s 63 | Code | 11 | | 3 | 00/086A : 20 6F 08 | JSR PRINTCHAR ;
64 | 1 bufferedio.s 64 | Code | 11 | | 2 | 00/086D : A9 1C | LDA #$1C ; \
65 | 1 bufferedio.s 65 | Code | 11 | | 3 | 00/086F : 20 ED FD | PRINTCHAR JSR {$FDED} ; prints character to screen, high byte not set, inverse text
66 | 1 bufferedio.s 66 | Code | 11 | | 2 | 00/0872 : A9 AA | LDA #$AA ; speed of animation
67 | 1 bufferedio.s 67 | Code | 11 | | 3 | 00/0874 : 20 A8 FC | JSR {$FCA8} ; waits for a while
68 | 1 bufferedio.s 68 | Code | 11 | | 2 | 00/0877 : A9 88 | LDA #$88 ; (backspace)
69 | 1 bufferedio.s 69 | Code | 11 | | 3 | 00/0879 : 20 ED FD | JSR {$FDED} ; backspaces over current char to overwrite
70 | 1 bufferedio.s 70 | Code | 11 | | 1 | 00/087C : 60 | RTS ; RETURN
71 | 1 bufferedio.s 71 | Empty | 11 | | 0 | 00/087D |
------+------------------------+-------------+----+---------+------+-----------------------+-------------------------------------------------------------------
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