mirror of https://github.com/RevCurtisP/C02.git
145 lines
12 KiB
C
145 lines
12 KiB
C
/* file6502.h - File I/O Command Processor Header File */
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#include "lib6502.h"
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typedef uint8_t byte;
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typedef uint16_t word;
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extern void setdebug(int dbg);
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/**********************************************************************************************
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* Process File Command *
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* Command passed in A and parameters in X, Y, and Carry *
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* 16-Bit values are passed with the MSB in Y and the LSB in X *
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* Results returned in A, X, and Y *
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* Unless otherwise specified, A contains the Command Code *
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* Status of 0 indicates success, any other value indicates failure *
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* For FOPEN only bits 5-7 of the File Mode are significant; bits 0-4 are ignored *
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* Bits 6-7 are the access mode: %00=Read, %01=Write, %10=Append, %11=Records *
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* Bit 5 is the access type: 0=text, 1=binary *
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* *
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* A=Command Description Parameters Returns *
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* A SETADDR Set File Buffer Address Y,X=Address Y,X=Address *
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* C FCLOSR Close File (Carry Clear) Y=Channel Y=Error *
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* CLOSEDIR Close Directory (Carry Set) Y=Channel Y=Error *
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* D READDIR Read Dir Entry (Carry Clear) Y=Channel X=Name Length, Y=Error *
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* SETADDR Struct Address *
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* READHDR Read Dir Header (Carry Set) Y=Channel X=Name Length, Y=Error *
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* SETADDR Struct Address *
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* E FEOF Check for End of File Y=Channel Y=EOF Indicator *
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* F FFLUSH Flush File to Disk Y=Channel X=Status, Y=Error *
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* G FGETC Read Character from File Y=Channel X=Character, Y=Error *
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* H FGETS Read String from File Y=Channel X=String Legth, Y=Error *
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* SETADDR Array Address *
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* I FSINIT Initialize File System *
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* G FGETW Read Integer (Carry Clear) Y=Channel Y.X=Integer, A=Error *
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* FPUTW Write Integer (Carry Set) Y=Channel Y=Error *
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* SETADDR Struct Address *
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* K REMOVE Remove File from Disk Y=Drive Y=Error *
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* SETNAME Filename *
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* L FLOAD Load File into Memory Y,X=End Address, A=Error *
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* SETNAME File Name *
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* SETADDR Start Address *
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* M RENAME Change Name of File on Disk Y=Drive Y=Error *
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* SETNAME Old Name *
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* SETBUFF New Name *
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* N SETNAME Set Filename (Carry Clear) YX=Name YX=Name *
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* SETBUFF Set File Buffer (Carry Set) YX=String YX=String *
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* O FOPEN Open File (Carry Clear) Y=Drive, X=Mode X=Channel, Y=Error *
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* SETNAME File Name *
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* SETINDEX Record Length (MRECRD) *
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* OPENDIR Open Directory (Carry Set) Y=Drive X=Channel, Y=Error *
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* SETNAME Directory Name *
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* P FPUTC Write Character to File Y=Channel, X=Char E=Status, Y=Error *
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* Q FPUTS Write String (Carry Clear) Y=Channel X=String Length, Y=Error *
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* SETADDR String Address *
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* FPUTLN Write Line (Carry Set) Y=Channel X=String Length, Y=Error *
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* SETADDR String Address *
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* R FREAD Read Bytes (Carry Clear) Y=Channel, X=Count X=Count, Y=Error *
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* SETADDR Array Address *
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* FGETR Read Record (Carry Set) Y=Channel A=Error, YX=Next Index *
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* SETADDR Struct *
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* SETINDEX Record Address *
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* S FSAVE Save File to Disk Y,X=End Address Y=Error *
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* SETNAME File Name *
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* SETADDR Start Address *
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* U GETCWD Get Current Dir (Carry Clear) Y=Drive ID X=Name Length, Y=Error *
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* SETADDR String Buffer *
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* U CHDIR Change Directory (Carry Set) Y=Drive ID Y=Error *
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* SETNAME Directory Name *
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* V GETDRIVE Get Current Drive (Carry Clear) X=Drive ID, Y=Error *
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* CHDRIVE Set Current Drive (Carry Set) Y=Drive ID Y=Error *
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* W FWRITE Write Bytes (Carry Clear) Y=Channel, X=Count X=Count, Y=Error *
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* X MKDIR Create Directory (Carry Clear) Y=Drive ID Y=Error *
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* SETNAME Directory Name *
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* RMDIR Remove Directory (Carry Set) Y=Drive ID Y=Error *
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* SETNAME Directory Name *
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* Y FERROR Get Last Error on Channel Y=Channel X=Channel Error, Y = Error *
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* SETADDR Array Address *
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* Z FSEEK Move to Position (Carry Clear) Y=Channel X=Status, Y=Error *
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* SETINDEX Position *
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* FTELL Get File Position (Carry Clear) Y=Channel A=Error, YX=Position *
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**********************************************************************************************/
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extern int filecmd(M6502 *mpu, word addr, byte data);
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/**********************************************************************************************
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* Process System Command *
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* Command passed in A and parameters in X, Y, and Carry *
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* 16-Bit values are passed with the MSB in Y and the LSB in X *
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* Results returned in A, X, and Y *
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* Unless otherwise specified, A contains the Command Code *
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* *
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* A=Command Description Parameters Returns *
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* C CLOCK Get System Clock A,Y,X=Clock (Seconds/50) *
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* T GETTM Get Date/Time (Carry Clear) Y,X = tm Address *
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* SETTM Set Date/Time Time (Carry Set Y,X = tm Address Y=Error * *
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**********************************************************************************************/
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extern int syscmd(M6502 *mpu, word addr, byte data);
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/* Initialize Extended RAM */
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extern void initxmem(void);
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/**********************************************************************************************
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* Process Extended Memory Command *
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* Extended Memory consists of 16 banks of 64KiB of memory, for a total of 1 MB of memory *
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* not directly addressable by the 6502. *
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* Memory is read and written a byte or word at a time to an 16 bit address within a bank. *
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* After each read or write, the address is incremented, and at the end of a bank, the *
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* address reset to zero and the next bank selected, wrapping around to bank 0 at the end. * *
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* Command passed in A and parameters in X, Y, and Carry *
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* 16-Bit values are passed with the MSB in Y and the LSB in X *
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* Results returned in A, X, and Y *
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* *
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* A=Command Description Parameters Returns *
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* A GETADDR Get Address (Carry Clear) Y,X=Address *
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* SETADDR Set Address (Carry Set) Y,X=Address *
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* B GETBANK Get Bank (Carry Clear) A=Bank *
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* SETBANK Set Bank (Carry Set) X=Bank *
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* C GETCHAR Read Byte (Carry Clear) A=Byte *
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* PUTCHAR Write Byte (Carry Set) X=Byte *
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* M GETMBLK Get Memory Block (Carry Clear) Y,X=Byte Count A,Y,X=Extended Address *
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* SETMBLK Set Memory Block (Carry Set) Y,X=Byte Count A,Y,X=Extended Address *
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* N GETNEXT Read Next Byte (Carry Clear) A=Byte *
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* PUTNEXT Write Next Byte (Carry Set) X=Byte *
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* S SYSADDR Set System RAM Address Y,X=Address *
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* W GETWORD Read Next Word (Carry Clear) Y,X=Word *
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* PUTWORD Write Next Word (Carry Set) Y,X=Word *
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* X SWPMBLK Swap Memory Block Y,X=Byte Count A,Y,X=Extended Address *
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**********************************************************************************************/
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extern int xmemcmd(M6502 *mpu, word addr, byte data);
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/**********************************************************************************************
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* Read Key Directly from Console *
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* Bypasses getc() from stdin, eliminating input buffering *
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* Returns ASCII key value in A, extended Key Code in Y and X *
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* Cursor Control Keys produce an ASCII value with the high bit set *
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**********************************************************************************************/
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extern int getkey(M6502 *mpu, word addr, byte data);
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/**********************************************************************************************
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* Write Character Directly to Console *
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* Bypasses putc() from stdout, eliminating output buffering *
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* Character Code is passed in A *
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**********************************************************************************************/
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extern int putcon(M6502 *mpu, word addr, byte data);
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