C/C++ Users Group Library 1996 July

home *** CD-ROM | disk | FTP | other *** search

/ C/C++ Users Group Library 1996 July / C-C++ Users Group Library July 1996.iso / vol_300 / 335_03 / asz80.txt < prev

Wrap

Text File | 1990-12-02 | 24.0 KB | 859 lines

- 1 - A. Appendix_for_asz80_Frankenstein_Assembler A.1 Pseudo_Operations A.1.1 Standard_Pseudo_Operation_Mnemonics End END File Inclusion INCL INCLUDE If IF Else ELSE End If ENDI Equate EQU Set SETEQU Org ORG Reserve Memory RESERVE RMB Define Byte Data BYTE DB FCB Define Word Data DW FDB WORD Define String Data FCC STRING Define Character Set Translation CHARSET Define Character Value CHARDEF CHD Use Character Translation CHARUSE A.1.2 Machine_Dependent_Pseudo_Operations A.1.2.1 Instruction_Set_Selection CPU string The instruction set can be specified in the source file with the CPU pseudooperation. The string, delimited by quotes or apostrophes, is scanned for a substring which selects which instruction set is used. When the program is invoked, this operation is performed on the name of the program, then the -p optional arguement, if any, and then any CPU statements. The last one selects the which subset of the instructions the assembler will accept. The instruction set can be changed at any place in the source file. Instruction Set Substrings 64180 180 z80 z80 Z80 8085 85 8080 80 A.2 Instructions A.2.1 Instruction_List - 2 - Opcode Syntax Selection Criteria ADC dreg ',' dreg TSZ80PLUS|DRDESTHL|DRBC ADC dreg ',' dreg TSZ80PLUS|DRDESTHL|DRDE ADC dreg ',' dreg TSZ80PLUS|DRDESTHL|DRHL ADC dreg ',' dreg TSZ80PLUS|DRDESTHL|DRSP ADC reg8 ',' '(' DREGHL ')' REGISA ADC reg8 ',' index TSZ80PLUS|DRIX|REGISA ADC reg8 ',' index TSZ80PLUS|DRIY|REGISA ADC reg8 ',' reg8 0|REGISA ADC reg8 ',' topexpr REGISA ADD dreg ',' dreg DRDESTHL|DRBC ADD dreg ',' dreg DRDESTHL|DRDE ADD dreg ',' dreg DRDESTHL|DRHL ADD dreg ',' dreg DRDESTHL|DRSP ADD dreg ',' dreg TSZ80PLUS|DRDESTIX|DRBC ADD dreg ',' dreg TSZ80PLUS|DRDESTIX|DRDE ADD dreg ',' dreg TSZ80PLUS|DRDESTIX|DRIX ADD dreg ',' dreg TSZ80PLUS|DRDESTIX|DRSP ADD dreg ',' dreg TSZ80PLUS|DRDESTIY|DRBC ADD dreg ',' dreg TSZ80PLUS|DRDESTIY|DRDE ADD dreg ',' dreg TSZ80PLUS|DRDESTIY|DRIY ADD dreg ',' dreg TSZ80PLUS|DRDESTIY|DRSP ADD reg8 ',' '(' DREGHL ')' REGISA ADD reg8 ',' index TSZ80PLUS|DRIX|REGISA ADD reg8 ',' index TSZ80PLUS|DRIY|REGISA ADD reg8 ',' reg8 0|REGISA ADD reg8 ',' topexpr REGISA AND '(' DREGHL ')' AND index TSZ80PLUS|DRIX AND index TSZ80PLUS|DRIY AND reg8 AND topexpr BIT expr ',' '(' DREGHL ')' TSZ80PLUS BIT expr ',' index TSZ80PLUS|DRIX BIT expr ',' index TSZ80PLUS|DRIY BIT expr ',' reg8 TSZ80PLUS CALL condition ',' expr CCSELC CALL condition ',' expr CCSELM CALL condition ',' expr CCSELNC CALL condition ',' expr CCSELNZ CALL condition ',' expr CCSELP CALL condition ',' expr CCSELPE CALL condition ',' expr CCSELPO - 3 - Opcode Syntax Selection Criteria CALL condition ',' expr CCSELZ CALL expr CCF CP '(' DREGHL ')' CP index TSZ80PLUS|DRIX CP index TSZ80PLUS|DRIY CP reg8 CP topexpr CPD TSZ80PLUS CPDR TSZ80PLUS CPI TSZ80PLUS CPIR TSZ80PLUS CPL DAA DEC '(' DREGHL ')' DEC dreg DRBC DEC dreg DRDE DEC dreg DRHL DEC dreg DRSP DEC dreg TSZ80PLUS|DRIX DEC dreg TSZ80PLUS|DRIY DEC index TSZ80PLUS|DRIX DEC index TSZ80PLUS|DRIY DEC reg8 DI DJNZ topexpr EI EX '(' DREGSP ')' ',' dreg DRHL EX '(' DREGSP ')' ',' dreg TSZ80PLUS|DRIX EX '(' DREGSP ')' ',' dreg TSZ80PLUS|DRIY EX dreg ',' dreg EX1DE|EX2HL EX dreg ',' dreg TSZ80PLUS|EX1AF|EX2AF EXX TSZ80PLUS - 4 - Opcode Syntax Selection Criteria HALT IM expr TSZ80PLUS|INTSETMODE0 IM expr TSZ80PLUS|INTSETMODE1 IM expr TSZ80PLUS|INTSETMODE2 IN0 reg8 ',' '(' topexpr ')' TS64180 IN reg8 ',' '(' REGC ')' TSZ80PLUS IN reg8 ',' '(' topexpr ')' REGISA INC '(' DREGHL ')' INC dreg DRBC INC dreg DRDE INC dreg DRHL INC dreg DRSP INC dreg TSZ80PLUS|DRIX INC dreg TSZ80PLUS|DRIY INC index TSZ80PLUS|DRIX INC index TSZ80PLUS|DRIY INC reg8 IND TSZ80PLUS INDR TSZ80PLUS INI TSZ80PLUS INIR TSZ80PLUS JP '(' dreg ')' DRHL JP '(' dreg ')' TSZ80PLUS|DRIX JP '(' dreg ')' TSZ80PLUS|DRIY JP condition ',' expr CCSELC JP condition ',' expr CCSELM JP condition ',' expr CCSELNC JP condition ',' expr CCSELNZ JP condition ',' expr CCSELP JP condition ',' expr CCSELPE JP condition ',' expr CCSELPO JP condition ',' expr CCSELZ JP expr JR condition ',' expr CCSELC|TSZ80PLUS JR condition ',' expr CCSELNC|TSZ80PLUS JR condition ',' expr CCSELNZ|TSZ80PLUS - 5 - Opcode Syntax Selection Criteria JR condition ',' expr CCSELZ|TSZ80PLUS JR expr TSZ80PLUS LD '(' dreg ')' ',' reg8 DRBC|REGISA LD '(' dreg ')' ',' reg8 DRDE|REGISA LD '(' dreg ')' ',' reg8 DRHL LD '(' dreg ')' ',' topexpr DRHL LD '(' topexpr ')' ',' REGA LD '(' topexpr ')' ',' dreg DRHL LD '(' topexpr ')' ',' dreg TSZ80PLUS|DRBC LD '(' topexpr ')' ',' dreg TSZ80PLUS|DRDE LD '(' topexpr ')' ',' dreg TSZ80PLUS|DRIX LD '(' topexpr ')' ',' dreg TSZ80PLUS|DRIY LD '(' topexpr ')' ',' dreg TSZ80PLUS|DRSP LD dreg ',' '(' topexpr ')' DRHL LD dreg ',' '(' topexpr ')' TSZ80PLUS|DRBC LD dreg ',' '(' topexpr ')' TSZ80PLUS|DRDE LD dreg ',' '(' topexpr ')' TSZ80PLUS|DRIX LD dreg ',' '(' topexpr ')' TSZ80PLUS|DRIY LD dreg ',' '(' topexpr ')' TSZ80PLUS|DRSP LD dreg ',' dreg TSZ80PLUS|DRHL|DRDESTSP LD dreg ',' dreg TSZ80PLUS|DRIX|DRDESTSP LD dreg ',' dreg TSZ80PLUS|DRIY|DRDESTSP LD dreg ',' topexpr DRBC LD dreg ',' topexpr DRDE LD dreg ',' topexpr DRHL LD dreg ',' topexpr DRSP LD dreg ',' topexpr TSZ80PLUS|DRIX LD dreg ',' topexpr TSZ80PLUS|DRIY LD index ',' expr TSZ80PLUS|DRIX LD index ',' expr TSZ80PLUS|DRIY LD index ',' reg8 TSZ80PLUS|DRIX LD index ',' reg8 TSZ80PLUS|DRIY LD reg8 ',' '(' dreg ')' DRBC|REGISA LD reg8 ',' '(' dreg ')' DRDE|REGISA LD reg8 ',' '(' dreg ')' DRHL LD reg8 ',' '(' topexpr ')' REGISA LD reg8 ',' index TSZ80PLUS|DRIX LD reg8 ',' index TSZ80PLUS|DRIY LD reg8 ',' reg8 LD reg8 ',' specialr TSZ80PLUS|SPECIALIR|REGISA LD reg8 ',' specialr TSZ80PLUS|SPECIALRR|REGISA LD reg8 ',' topexpr LD specialr ',' REGA TSZ80PLUS|SPECIALIR LD specialr ',' REGA TSZ80PLUS|SPECIALRR LDD TSZ80PLUS - 6 - Opcode Syntax Selection Criteria LDDR TSZ80PLUS LDI TSZ80PLUS LDIR TSZ80PLUS MULT dreg TS64180|DRBC MULT dreg TS64180|DRDE MULT dreg TS64180|DRHL MULT dreg TS64180|DRSP NEG TSZ80PLUS NOP OR '(' DREGHL ')' OR index TSZ80PLUS|DRIX OR index TSZ80PLUS|DRIY OR reg8 OR topexpr OTDM TS64180 OTDMR TS64180 OTDR TSZ80PLUS OTIM TS64180 OTIMR TS64180 OTIR TSZ80PLUS OUT0 '(' topexpr ')' ',' reg8 TS64180 OUT '(' REGC ')' ',' reg8 TSZ80PLUS OUT '(' topexpr ')' ',' reg8 REGISA OUTD TSZ80PLUS OUTI TSZ80PLUS POP dreg DRAF POP dreg DRBC POP dreg DRDE POP dreg DRHL - 7 - Opcode Syntax Selection Criteria POP dreg TSZ80PLUS|DRIX POP dreg TSZ80PLUS|DRIY PUSH dreg DRAF PUSH dreg DRBC PUSH dreg DRDE PUSH dreg DRHL PUSH dreg TSZ80PLUS|DRIX PUSH dreg TSZ80PLUS|DRIY RES expr ',' '(' DREGHL ')' TSZ80PLUS RES expr ',' index TSZ80PLUS|DRIX RES expr ',' index TSZ80PLUS|DRIY RES expr ',' reg8 TSZ80PLUS RET RET condition CCSELC RET condition CCSELM RET condition CCSELNC RET condition CCSELNZ RET condition CCSELP RET condition CCSELPE RET condition CCSELPO RET condition CCSELZ RETI TSZ80PLUS RETN TSZ80PLUS RIM CPU8085 RL '(' DREGHL ')' TSZ80PLUS RL index TSZ80PLUS|DRIX RL index TSZ80PLUS|DRIY RL reg8 TSZ80PLUS RLA RLC '(' DREGHL ')' TSZ80PLUS RLC index TSZ80PLUS|DRIX RLC index TSZ80PLUS|DRIY RLC reg8 TSZ80PLUS RLCA RLD TSZ80PLUS - 8 - Opcode Syntax Selection Criteria RR '(' DREGHL ')' TSZ80PLUS RR index TSZ80PLUS|DRIX RR index TSZ80PLUS|DRIY RR reg8 TSZ80PLUS RRA RRC '(' DREGHL ')' TSZ80PLUS RRC index TSZ80PLUS|DRIX RRC index TSZ80PLUS|DRIY RRC reg8 TSZ80PLUS RRCA RRD TSZ80PLUS RST expr SBC dreg ',' dreg TSZ80PLUS|DRDESTHL|DRBC SBC dreg ',' dreg TSZ80PLUS|DRDESTHL|DRDE SBC dreg ',' dreg TSZ80PLUS|DRDESTHL|DRHL SBC dreg ',' dreg TSZ80PLUS|DRDESTHL|DRSP SBC reg8 ',' '(' DREGHL ')' REGISA SBC reg8 ',' index TSZ80PLUS|DRIX|REGISA SBC reg8 ',' index TSZ80PLUS|DRIY|REGISA SBC reg8 ',' reg8 0|REGISA SBC reg8 ',' topexpr REGISA SCF SET expr ',' '(' DREGHL ')' TSZ80PLUS SET expr ',' index TSZ80PLUS|DRIX SET expr ',' index TSZ80PLUS|DRIY SET expr ',' reg8 TSZ80PLUS SIM CPU8085 SLA '(' DREGHL ')' TSZ80PLUS SLA index TSZ80PLUS|DRIX SLA index TSZ80PLUS|DRIY SLA reg8 TSZ80PLUS SLP TS64180 SRA '(' DREGHL ')' TSZ80PLUS SRA index TSZ80PLUS|DRIX SRA index TSZ80PLUS|DRIY - 9 - Opcode Syntax Selection Criteria SRA reg8 TSZ80PLUS SRL '(' DREGHL ')' TSZ80PLUS SRL index TSZ80PLUS|DRIX SRL index TSZ80PLUS|DRIY SRL reg8 TSZ80PLUS SUB '(' DREGHL ')' SUB index TSZ80PLUS|DRIX SUB index TSZ80PLUS|DRIY SUB reg8 SUB topexpr TST '(' DREGHL ')' TS64180 TST reg8 TS64180 TST topexpr TS64180 TSTIO topexpr TS64180 XOR '(' DREGHL ')' XOR index TSZ80PLUS|DRIX XOR index TSZ80PLUS|DRIY XOR reg8 XOR topexpr A.2.2 Selection_Criteria_Keywords CPU8085 Instruction is only implemented for the 8085. TSZ80PLUS Instruction is implemented in the z80 and 64180 instruction sets. TS64180 Instruction is only implemented in the 64180 DRIX Instruction refers to the IX index register DRIY Instruction refers to the IY index register DRSP Instruction refers to the Stack Pointer DRHL Instruction refers to the HL register - 10 - DRDE Instruction refers to the DE register DRBC Instruction refers to the BC register DRAF Instruction refers to the AF concatenated register DRDESTSP Instruction which refers to two double register operands, uses the Stack Pointer as the destination. DRDESTHL Instruction which refers to two double register operands, uses the HL double register as the destination. DRDESTIX Instruction which refers to two double register operands, uses the IX index register as the destination. DRDESTIY Instruction which refers to two double register operands, uses the IY index register as the destination. REGISA Instruction is restricted to using the A register for an 8 bit register operand. CCSELNZ Instruction uses NonZero condition. CCSELZ Instruction uses Zero condition. CCSELNC Instruction uses No Carry condition. CCSELC Instruction uses Carry condition. CCSELPO Instruction uses Parity Odd condition. CCSELPE Instruction uses Parity Even condition. CCSELP Instruction uses Plus condition. CCSELM Instruction uses Minus condition. - 11 - EX1AF First operand of an Ex instruction is the AF register. EX1DE First operand of an Ex instruction is the DE register. EX2AF Second operand of an Ex instruction is the AF register. EX2HL Second operand of an Ex instruction is the HL register. SPECIALIR Instruction uses the I special register. SPECIALRR Instruction uses the R special register. A.2.3 Apostrophes The apostrophes in the syntax field are a notation used for the parser generator and are not put in the assembler source statement. A.3 Notes A.3.1 Conditions Conditions are represented by the reserved symbols z, nz, nc, pe, po, p, m, and c, and their uppercase versions. A.3.2 Indexed_Addressing Index addressing uses the format "( index register + expression )" where index register is IX or IY. A.3.3 Top_Expressions The syntax of some of the instructions combined with the standard expression syntax resulted in confusion whether an operand was an expression surrounded by parenthesis, or a memory reference. To get around this, the expressions in these ambiguous cases were restricted to those forms of expression that don't have surrounding parenthesis at the top level. Subexpressions may be parenthesized, but only if an operator seperates or precedes the subexpression. Example ld a, (47h) ; load from memory address 0x47 ld a, +(47h) ; load immediate value 0x47 ld a, ((47h)) ; error A.3.4 dreg,_reg8,_specialr Double registers (dreg) are the set of symbols af, bc, de, hl, ix, iy, and sp and their uppercase versions. - 12 - Eight bit registers (reg8) are the set of symbols a, b, c, d, e, h, l, and their uppercase versions. Special registers are i, r, I, R. A.3.5 Bit_Numbers The bit number expression in the BIT, RES, and SET operations has to have value defined when the instruction is read in the first pass. The value must be between 0 and 7. A.3.6 Reserved_Symbols A.3.6.1 Machine_Dependent_Reserved_Symbols A AF B BC C D DE E H HL I IX IY L M NC NZ P PE PO R SP Z a af b bc c d de e h hl i ix iy l m nc nz p pe po r sp z A.3.6.2 Standard_Reserved_Symbols AND DEFINED EQ GE GT HIGH LE LOW LT MOD NE NOT OR SHL SHR XOR and defined eq ge gt high le low lt mod ne not or shl shr xor CONTENTS A. Appendix for asz80 Frankenstein Assembler........... 1 A.1 Pseudo Operations.............................. 1 A.2 Instructions................................... 1 A.3 Notes.......................................... 11 - i -