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- /*
- HEADER: CUG113;
- TITLE: 1802 Cross-Assembler (BDS C Version);
- FILENAME: A15.H;
- VERSION: 1.2;
- DATE: 07/22/1985;
-
- DESCRIPTION: "This program lets you use your CP/M-80-based computer
- to assemble code for the RCA 1802, 1804, 1805, 1805A,
- 1806, AND 1806A microprocessors. The program is
- written in BDS C for the best possible performance on
- 8-bit machines. All assembler features are supported
- except relocation, linkage, listing control, and
- macros.";
-
- KEYWORDS: Software Development, Assemblers, Cross-Assemblers,
- RCA, CDP1802, CDP1805A;
-
- SEE-ALSO: CUG149, 1805A Cross-Assembler (Portable);
-
- SYSTEM: CP/M-80;
- COMPILERS: BDS C;
-
- WARNINGS: "This package is specifically tailored to CP/M-80
- machines and the rather non-standard, but high-
- performance BDS C compiler. For other environments,
- use the portable version of this package on CUG149.";
-
- AUTHORS: William C. Colley III;
- */
-
- /*
- 1805A Cross-Assembler v 1.2
-
- Copyright (c) 1980, 82, 83, 85 William C. Colley, III.
-
- July 1982 -- Adapted from my 1802 cross assembler. WCC3.
-
- Vers 1.0 -- March 1983 -- Added 1805A opcodes to the 1805 set. WCC3.
-
- Vers 1.1 -- March 1983 -- Added CPU pseudo-op to combine 1802 and 1805A
- cross-assemblers into a single program. WCC3.
-
- Vers 1.2 -- June 1985 -- Fixed IF block nesting mechanism bug and bug
- in 1805A SCAL opcode. WCC3.
-
- File: a15.h
-
- Global macro substitutions and external variable declarations.
- */
-
- /* For the benefit of the library's I/O drivers: */
-
- #include <bdscio.h>
-
- /* Set input line length: */
-
- #define LINLEN 120
-
- /* Define symbol table parameters: */
-
- #define SYMLEN 8 /* Length of labels (must be an even number). */
- #define SYMBOLS 500 /* Number of symbols in symbol table. */
- #define PADDING " " /* SYMLEN - 1 blanks. */
-
- /* Number of if statements that can be nested: */
-
- #define IFDEPTH 16
- #define ON 1
- #define OFF -1
-
- /* BDOS functions called directly: */
-
- #define GETDISK 25 /* Get currently logged in disk. */
-
- /* Define flag values: */
-
- #define SKIP TRUE /* Used with skip flag in getchr. */
- #define NOSKIP FALSE
- #define BIGST TRUE /* Used to tell kind of string in getitem. */
- #define SMALST FALSE
- #define DEFEXT FALSE /* Used to set default value of extend. */
- #define NOCODE 0 /* Used to tell the hex generator what to do. */
- #define PUTCODE 1
- #define FLUSH 2
- #define NOMORE 3
-
- /* File descriptors: */
-
- #define NOFILE -1 /* No file specified. */
- #define CONO 1 /* Console output. */
- #define LST 2 /* List device. */
- #define LODISK 4 /* Lowest numbered disk. */
-
- /* Items can have the following attributes: */
-
- #define ALPHA 0 /* Alphabetic character. */
- #define NUMERIC 1 /* Numeric digit (0-9). */
- #define END_LIN 2 /* End-of-Line marker (cr or ;). */
- #define COMMA 3 /* Field separator (,). */
- #define OPERATR 4 /* Operator (* - GE < ( SHR etc.). */
- #define QUOTE 5 /* String delimiter (" '). */
- #define VALUE 6 /* Evaluated expression. */
- #define BLANK 7 /* White space (spc tab). */
- #define TRASH 8 /* Other characters. */
-
- /* Some tokens for composite operators: */
-
- #define NO_OPR 0 /* No operator. */
- #define GRTEQ 1 /* Greater than or equal to. */
- #define NOTEQ 2 /* Not equal to. */
- #define LESEQ 3 /* Less than or equal to. */
- #define AND 4 /* And. */
- #define OR 5 /* Or. */
- #define XOR 6 /* Exclusive or. */
- #define NOT 7 /* 1's complement. */
- #define MOD 8 /* Mod--divide and return remainder. */
- #define SHL 9 /* Shift left. */
- #define SHR 10 /* Shift right. */
- #define HIGH 11 /* High byte of. */
- #define LOW 12 /* Low byte of. */
-
- /* Operator precedence values: */
-
- #define UOP1 0 /* Unary +, unary -. */
- #define MULT 1 /* *, /, MOD, SHL, SHR. */
- #define ADDIT 2 /* Binary +, binary -. */
- #define RELAT 3 /* >, =, <, >=, <>, <=. */
- #define UOP2 4 /* NOT. */
- #define LOG1 5 /* AND. */
- #define LOG2 6 /* OR, XOR. */
- #define UOP3 7 /* HIGH, LOW. */
- #define RPREN 8 /* ). */
- #define LPREN 9 /* (. */
- #define ENDEX 10 /* CR, ;, ,. */
- #define START 11 /* Start of expression. */
-
- /* Bits of opcode attribute byte. */
-
- #define PSOP 0x80 /* Pseudo-op. */
- #define IFGROUP 0x40 /* Pseudo-op is IF, ELSE, ENDI. */
- #define XOPC 0x40 /* Machine opcode is 2 bytes. */
- #define PROCNUM 0x38 /* Mask to get processor number for opcode. */
- #define BYTES 0x07 /* Mask to get number of bytes in opcode. */
-
- /* Set up disk I/O buffers: */
-
- struct _buf _source, _list, _hex, *source, *list, *hex;
-
- /* Set up the symbol table: */
-
- struct symbtbl
- {
- char symname[SYMLEN];
- unsigned symvalu;
- }
- symtbl[SYMBOLS], *symend, *sympoint;
-
- /* If stack and stack pointer. */
-
- char ifsp;
- int ifstack[IFDEPTH+1];
-
- /* Buffer to hold current line: */
-
- char *linptr, linbuf[LINLEN];
-
- /* Buffer to hold the code generated by a line. */
-
- char nbytes, binbuf[255];
-
- /* Buffers for the hex generator. */
-
- char chksum, hxbytes, *hxlnptr, hxlnbuf[44];
-
- /* Miscellanious mailboxes: */
-
- char errcode; /* Error records. */
- int errcount;
- char evalerr; /* Flag to tell of error in eval. */
- char backflg, oldattr; /* Item push-back buffer. */
- unsigned oldvalu;
- char curdrive; /* Place to save drive that was current
- disk when assembly started. */
- char hexflg; /* Flag for asmline to tell hex
- generator what to do. */
- char directok; /* All symbols on line pre-defined. */
- unsigned pc; /* Assembly program counter. */
- unsigned address; /* Address to be put into listed line. */
- char pass; /* Which pass the assembly is in. */
- char extend; /* Flag to tell getopcod() whether the 1805A
- extended opcodes are allowed or not. */
-
- /* Some trivial functions: */
-
- #define backchr linptr-- /* Push back a character. */
- , linbuf[LINLEN];
-
- /* Buffer to hold the code generated by a line. */
-
- char nbytes, binbuf[255];
-
- /* Buffers for the