diff options
Diffstat (limited to 'programs/sub-suite/subasm.s')
| -rw-r--r-- | programs/sub-suite/subasm.s | 233 |
1 files changed, 6 insertions, 227 deletions
diff --git a/programs/sub-suite/subasm.s b/programs/sub-suite/subasm.s index d661695..0a7640d 100644 --- a/programs/sub-suite/subasm.s +++ b/programs/sub-suite/subasm.s @@ -3,225 +3,6 @@ ; ; by mr b0nk 500 <b0nk@b0nk.xyz> -MAX_SYM = $800 ; Max symbol size. -OPNUM = 88 ; Instruction count. - -.include "lexer.s" -.include "utils.s" - -.org incl -; String Constants. -asm_name: - .byte "SuBAsm" -asm_ver: - .byte "0.1" - -; Directives. -dir: - .byte "org" - .byte "byte" - .byte "word" - .byte "dword" - .byte "qword" - .byte "include" - -; Short form Commands. -sh_cmds: - .byte "vlahirs" - -; Commands. -cmds: - .byte "viewmem" - .byte "list" - .byte "asm" - .byte "help" - .byte "inst" - .byte "run" - .byte "set" - -; Instruction mnemonics, and opcodes. - -; Legend. -; mne = Mnemonic. -; imm = Immediate data. -; zm = Zero Matrix. -; zmx = Zero Matrix, indexed with X. -; zmy = Zero Matrix, indexed with Y. -; ind = Indirect. -; idx = Indexed Indirect. -; idy = Indirect Indexed. -; abs = Absolute. -; imp = Implied. - -mne: -; mne imm, zm, zmx, zmy, ind, idx, idy, abs, imp - .byte "CPS", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $00 - .byte "ADC", $01, $06, $FF, $FF, $FF, $FF, $FF, $04, $FF - .byte "AAB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $02 - .byte "PHP", $08, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF - .byte "CPB", $09, $2D, $FF, $FF, $55, $AD, $AC, $2C, $FF - .byte "PHB", $0A, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF - .byte "DEC", $FF, $0D, $FF, $FF, $FF, $FF, $FF, $0C, $E5 - .byte "JMP", $FF, $0E, $FF, $FF, $CE, $FF, $FF, $10, $FF - .byte "SBC", $11, $16, $FF, $FF, $FF, $FF, $FF, $14, $FF - .byte "SAB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $12 - .byte "ENT", $18, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF - .byte "CPY", $19, $3D, $FF, $FF, $85, $FF, $FF, $4C, $FF - .byte "PLB", $1A, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF - .byte "INC", $FF, $1D, $FF, $FF, $FF, $FF, $FF, $1C, $F5 - .byte "JSR", $FF, $1E, $FF, $FF, $BE, $FF, $FF, $20, $FF - .byte "AND", $21, $26, $FF, $FF, $FF, $FF, $FF, $24, $FF - .byte "ABA", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $22 - .byte "PLP", $28, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF - .byte "CPX", $29, $4D, $FF, $FF, $B5, $FF, $FF, $3C, $FF - .byte "PHY", $2A, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF - .byte "BPO", $FF, $2E, $FF, $FF, $FF, $FF, $FF, $30, $FF - .byte "ORA", $31, $36, $FF, $FF, $FF, $FF, $FF, $34, $FF - .byte "OAB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $32 - .byte "STT", $38, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF - .byte "PLY", $3A, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF - .byte "BNG", $FF, $3E, $FF, $FF, $FF, $FF, $FF, $40, $FF - .byte "XOR", $41, $46, $FF, $FF, $FF, $FF, $FF, $44, $FF - .byte "XAB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $42 - .byte "PHA", $48, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF - .byte "PHX", $4A, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF - .byte "BCS", $FF, $4E, $FF, $FF, $FF, $FF, $FF, $50, $FF - .byte "LSL", $51, $56, $FF, $FF, $FF, $FF, $FF, $54, $FF - .byte "LLB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $52 - .byte "CLC", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $58 - .byte "PLX", $5A, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF - .byte "BCC", $FF, $5E, $FF, $FF, $FF, $FF, $FF, $60, $FF - .byte "LSR", $61, $66, $FF, $FF, $FF, $FF, $FF, $64, $FF - .byte "LRB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $62 - .byte "PLA", $68, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF - .byte "TAB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $6A - .byte "BEQ", $FF, $6E, $FF, $FF, $FF, $FF, $FF, $70, $FF - .byte "ROL", $71, $76, $FF, $FF, $FF, $FF, $FF, $74, $FF - .byte "RLB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $72 - .byte "SEC", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $78 - .byte "TBA", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $7A - .byte "BNE", $FF, $7E, $FF, $FF, $FF, $FF, $FF, $80, $FF - .byte "ROR", $81, $86, $FF, $FF, $FF, $FF, $FF, $84, $FF - .byte "RRB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $82 - .byte "DEY", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $88 - .byte "TAY", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $8A - .byte "BVS", $FF, $8E, $FF, $FF, $FF, $FF, $FF, $90, $FF - .byte "MUL", $91, $96, $FF, $FF, $FF, $FF, $FF, $94, $FF - .byte "MAB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $92 - .byte "CLI", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $98 - .byte "TYA", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $9A - .byte "BVC", $FF, $9E, $FF, $FF, $FF, $FF, $FF, $A0, $FF - .byte "DIV", $A1, $A6, $FF, $FF, $FF, $FF, $FF, $A4, $FF - .byte "DAB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $A2 - .byte "INY", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $A8 - .byte "TAX", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $AA - .byte "RTS", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $AE - .byte "CMP", $B1, $B6, $FF, $FF, $25, $7D, $7C, $B4, $FF - .byte "CAB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $B2 - .byte "SEI", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $B8 - .byte "LDX", $B9, $BD, $FF, $C9, $95, $FF, $FF, $BC, $FF - .byte "TXA", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $BA - .byte "RTI", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $C0 - .byte "LDA", $C1, $C6, $79, $39, $05, $5D, $5C, $C4, $FF - .byte "DEX", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $C5 - .byte "CLV", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $C8 - .byte "TYX", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $CA - .byte "STA", $FF, $CD, $89, $49, $15, $6D, $6C, $CC, $FF - .byte "TSX", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $D0 - .byte "LDB", $D1, $D6, $99, $59, $35, $8D, $8C, $D4, $FF - .byte "INX", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $D5 - .byte "WAI", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $D8 - .byte "TXY", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $DA - .byte "STB", $FF, $DD, $A9, $69, $45, $9D, $9C, $DC, $FF - .byte "TXS", $E0, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF - .byte "LDY", $E1, $E6, $E9, $FF, $65, $FF, $FF, $E4, $FF - .byte "BRK", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $E8 - .byte "NOP", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $EA - .byte "STY", $FF, $ED, $F9, $FF, $75, $FF, $FF, $EC, $FF - .byte "DEB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $EE - .byte "ASR", $F1, $F6, $FF, $FF, $FF, $FF, $FF, $F4, $FF - .byte "ARB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $F2 - .byte "STX", $FF, $FD, $FF, $D9, $A5, $FF, $FF, $FC, $FF - .byte "INB", $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF, $FE - -; Command subroutine table. -cmd_srt: - .word viewmem - .word list - .word asm - .word help - .word inst - .word run - .word set - -; Data entry point for the lexer. -lexer_data: - - -; Token table. -.org $20000 -tokline: - -.org cmd_buf+$400 -; Program Counter. -prg_cnt: - .qword 0 -; Hex digit string buffer. -hex_str: - .qword 0, 0 -; String buffer. -strbuf: - -.org strbuf+$80 -; Subroutine pointer. -sub_ptr: - .word 0 - -; Indecies. -idx0: - .qword 0 -idx1: - .qword 0 -idx2: - .qword 0 -idx3: - .qword 0 - -; Value buffer used by strtoull. -valbuf: - .qword 0 - -; Copy buffer used by delmcpy. -cpybuf: - .qword 0 - -; Current token line. -ctok: - .word 0 - -; Last token line. -ltok: - .word 0 - -; Lexeme type. -lex_type: - .byte 0 - -; Lexeme string. -lexeme: - -; Symbol table. -.org lexeme+$100 -sym: - -; Fixup table. -; Fixups are unresolved symbols. -.org sym+$8000 -fix: - - -; Start of program code. -.org parser subasm: ldb #0 ; Set the first pointer lda.d #cmd_buf ; to the command buffer. @@ -244,15 +25,17 @@ subasm: cmp #8 ; Is the command ID greater than the command count? bcs @end ; Yes, so we're done. lsl #1 ; No, so multiply the command ID by two. - phy.w ; Preserve the screen buffer position. tay ; Set the index to the offset that we just calculated. lda.w (ptr2), y ; Get the command subroutine, from the command subroutine table. - ply.w ; Get back the screen buffer position. ldb #2 ; Save it in the third pointer. jsr set_ptr ; ldb #0 ; Reset B. jsr (ptr3) ; Run the command's subroutine. @end: + and #0 ; Reset A. + jsr update_ptr ; Get the screen buffer index. + tay ; Save it in Y. + and #0 ; Reset A. rts ; End of subasm. chk_shcmd: @@ -306,7 +89,7 @@ chk_cmd: clc ; Prepare for a non carrying add. adc.w idx0 ; Offset the pointer, by the length of the previous string. pha.q ; Preserve the command string pointer. - jsr strcasecmp ; Is the command buffer, the same as the command string? + jsr strcaseg ; Is the command buffer, the same as the command string? pla.q ; Get the command string pointer back. beq @true ; Yes, so return true. ldb idx1 ; No, so Get the command ID. @@ -315,8 +98,7 @@ chk_cmd: inc idx1 ; No, so increment the command ID. @getlen: jsr strlen ; Get the string's length. - inx ; Add one to the length. - txa ; Place it in the accumulator. + inc ; Add one to the length. clc ; Prepare for a non carrying add. adc.w idx0 ; Add the string offset to the current length sta.w idx0 ; Save the offset in the first index. @@ -391,6 +173,3 @@ set: nop ; @end: rts ; End of set. - -; Entry point for utility subroutines. -lexer: |