# BrainFuck 6502 Interpreter for the Apple ][ //e

This is an 187 byte interpreter of BrainFuck for the 6502 Apple ]\[ //e

**Note:** Select and Shift-INS to paste into AppleWin or enter manually

        CALL-151
        300: 20 D8 F3 20 E2 F3
        306: A0 00 84 3C 84 40 84 EE
        30E: A9 60 85 3D A9 20 85 41
        316: B1 3C F0 1F 20 24 03 20 C2 FC A0 00 F0 F2
        324: A2 07 D5 F0 F0 04 CA 10 F9 60
        32E: A9 03 48 B5 F8 48 18 B1 40 60
        338: 4C 11 FE
        33B: A5 40 D0 02 C6 41 C6 40 60
        344: 69 02 18
        347: E9 00
        349: A0 00 91 40 60
        34E: 20 0C FD 29 7F 10 F4
        355: 09 80 4C ED FD
        35A: E6 EE B1 40 D0 E3 A5 EE 85 EF
        364: 20 C2 FC B1 3C C9 5B D0 04 E6 EF D0 F3
        371: C9 5D D0 EF A5 EE C5 EF F0 C8 C6 EF 18 90 E4
        380: C6 EE B1 40 F0 BD A5 EE 85 EF
        38A: A5 3C D0 02 C6 3D
        390: C6 3C B1 3C C9 5D D0 04 C6 EF D0 EE
        39C: C9 5B D0 EA A5 EE C5 EF F0 9D E6 EF 18 90 DF
        F0: 2C 2E 5B 3C 5D 3E 2D 2B
        F8: 4D 54 59 3A 7F 37 46 43

# Examples

NOTE:

* Watch out for hidden CRs since the Apple will break the line up.  You may need to copy paste these as multiple lines.

        0 "++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>."
        REM Hello World!
        CALL -151
        6000<806.900M
        300G

        REM http://esolangs.org/wiki/Talk:Brainfuck
        0 "++++++++[->-[->-[->-[-]<]<]<]"
        CALL-151
        6000<806.900M
        300G

        REM -n/a-
        0 ">++++++++[<++++++++++>-]<[>+>+<<-]>-.>-----.>"
        REM OK
        CALL-151
        6000<806.900M
        300G

        0 "+++++++++++++[>+++++++++>++++++++>++++++++>+++++<<<<-]>-.>.---.>+++++.<----.<.>>+++++.<++++++++.>++++++.<----.----.<.-.>>+.----------.<<++.>>>-.<<<++++.>.+++++++.>..>------------------.<<-----.>.>.<-.<<+."
        REM thematrixeatsyou@yahoo.co.nz
        CALL-151
        6000<806.900M
        300G

        0 "++++++++[->-[->-[->-[-]<]<]<]>++++++++[<++++++++++>-]<[>+>+<<-]>-.>-----.>"
        CALL -151
        6000<806.900M
        300G

        0 "++++[>++++++<-]>[>+++++>+++++++<<-]>>++++<[[>[[>>+<<-]<]>>>-]>-[>+>+<<-]>]+++++[>+++++++<<++>-]>.<<."
        REM Need 32K data!!!
        REM Prints #
        CALL -151
        2000:0
        2001<2000.BFFEM
        300G

# AppleWin Symbols

From AppleWin press `F7` to enter the debugger, and Ctrl-V to have BrainFuck symbols

        SYM CUR_DEPTH   = EE
        SYM NUM_BRACKET = EF

        SYM BRAINFUCK  = 300
        SYM FETCH      = 316
        SYM INTERPRET  = 324
        SYM FIND_OP    = 326
        SYM EXEC       = 32E
        SYM EXIT       = 337

        SYM BF_NEXT    = 338 // > 3E
        SYM BF_PREV    = 33B // < 3C
        SYM BF_PREV_1  = 341
        SYM EXIT_2     = 343
        SYM BF_INC     = 344 // + 2B
        SYM BF_DEC     = 347 // - 2D
        SYM STORE_DATA = 349
        SYM BF_IN      = 34E // , 2C
        SYM BF_OUT     = 355 // . 2E
        SYM BF_IF      = 35A // [ 5B
        SYM BF_IF_2    = 364
        SYM BF_IF_4    = 371

        SYM BF_FI      = 380 // ] 5D
        SYM BF_FI_2    = 38A
        SYM BF_FI_3    = 390
        SYM BF_FI_4    = 39C

        SYM NXTA1_8    = FCC2
        SYM STOR_6     = FE11
        SYM OPCODE     = F0
        SYM OPFUNCPTR  = F8

# Discussion

Originally posted in c.e.a2:

* https://groups.google.com/d/msg/comp.emulators.apple2/Om3JKqDZoEA/cwa5U1Hr3TAJ