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187 lines
6.7 KiB
PHP
187 lines
6.7 KiB
PHP
; ---------------------------------------------------------------------------
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;
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; SYM-1 definitions
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;
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; ---------------------------------------------------------------------------
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RAMSTART := $0200 ; Entry point
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; ---------------------------------------------------------------------------
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; Monitor Functions
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; ---------------------------------------------------------------------------
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WARM := $8003 ; Monitor entry
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SVNMI := $809B ; Save NMI entry
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INBYTE := $81D9 ; Get two HEX characters and pack
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ASCNIB := $8275 ; Test for carriage-return
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INCCMP := $82B2 ; Increment pointer
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CHKSAD := $82DD ; Compute checksum
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OUTPC := $82EE ; Display program counter
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OUTBYT := $82FA ; Print byte as two ASCII characters
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OUTS2 := $8319 ; Print pointer
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INSTAT := $8386 ; Determine if key is pressed
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GETKEY := $88AF ; Get key (disregarding monitor login)
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SCAND := $8906 ; Flash LED display (once)
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KEYQ := $8923 ; Test for keypress
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BEEP := $8972 ; Make a beep
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CONFIG := $89A5 ; Configure I/O
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OUTDSP := $89C1 ; Output to on-board LED display
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INCHR := $8A1B ; Input character and convert to uppercase
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OUTCHR := $8A47 ; Output character
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INTCHR := $8A58 ; Input character without case conversion
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DLYF := $8AE6 ; Delay 1 bit time
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DLYH := $8AE9 ; Delay 1/2 bit time
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RESET := $8B4A ; Hard reset
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ACCESS := $8B86 ; Unlock lowest 4K memory
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NACCES := $8B9C ; Lock lowest 4K memory
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L8C78 := $8C78 ; Link to tape
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DUMPT := $8E87 ; Dump memory to tape
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LOADT := $8C78 ; Load memory from tape
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TAPEMODE := $00FD ; Top bit on for high-speed
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; ---------------------------------------------------------------------------
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; System Memory
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; ---------------------------------------------------------------------------
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DISBUF := $A640 ; On-Board Display Buffer
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DISBUF0 := $A640 ; Left-Most digit
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DISBUF1 := $A641 ; Second digit
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DISBUF2 := $A642 ; Third
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DISBUF3 := $A643 ; Fourth
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DISBUF4 := $A644 ; Fifth
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DISBUF5 := $A645 ; Sixth and right-most digit
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DISBUF6 := $A646 ; Not-used / right of display (shift buffer)
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RDIG := $A645 ; Right-most digit (same as DISBUF5)
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P3L := $A64A ; Parameter 3 (low-byte)
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P3H := $A64B ; (high-byte)
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P2L := $A64C ; Parameter 2
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P2H := $A64D ;
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P1L := $A64E ; Parameter 1
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P1H := $A64F
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PARNR := $A649 ; Number of Parameters Entered
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PADBIT := $A650 ; Pad Bits for Carriage Return
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SDBYT := $A651 ; Baud Rate for RS232 (01-4800,06-2400,10-1200,24-600,4C-300,D5-110)
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ERCNT := $A652 ; Error Count (Max FF)
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TECHO := $A653 ; Terminal Echo (bit-7=ECHO/NO, 6=CTL-O TOGGLE)
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TOUTFL := $A654 ; Output Flags (bit-7=CRT IN, 6=TTY IN, 5=TTY OUT, 4=CRT OUT)
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KSHFL := $A655 ; Keyboard Shift Flag
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TV := $A656 ; Trace Velocity (0=Single Step)
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LSTCOM := $A657 ; Last Monitor Command
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MAXRC := $A658 ; Maximum Record Length for Memory Dump
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; ---------------------------------------------------------------------------
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; Register Followers
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; ---------------------------------------------------------------------------
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PCLR := $A659 ; Program Counter (low-byte)
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PCHR := $A65A ; (high-byte)
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SR := $A65B ; Stack Pointer
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FR := $A65C ; Status Register Flags
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AR := $A65D ; A Register
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XR := $A65E ; X Register
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YR := $A65F ; Y Register
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; ---------------------------------------------------------------------------
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; I/O Vectors (3 bytes each)
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; ---------------------------------------------------------------------------
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INVEC := $A660 ; Input Character
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OUTVEC := $A663 ; Output Character
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INSVEC := $A666 ; Input Status
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URSVEC := $A669 ; Unrecognized Syntax
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URCVEC := $A66C ; Unrecognized Command / Error
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SCNVEC := $A66F ; Scan On-board Display
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; ---------------------------------------------------------------------------
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; Trace and Interrupt Vectors (2 bytes each)
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; ---------------------------------------------------------------------------
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EXEVEC := $A672 ; Exec and Alternate InVec
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TRCVEC := $A674 ; Trace
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UBRKVC := $A676 ; User Break after Monitor
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UIRQVC := $A678 ; User non-break IRQ after Monitor
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NMIVEC := $A67A ; Non-Maskable Interrupt
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RSTVEC := $A67C ; Reset
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IRQVEC := $A67E ; Interrupt Request
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; ---------------------------------------------------------------------------
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; I/O Registers
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; ---------------------------------------------------------------------------
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;
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; 6532 (U27)
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;
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PADA := $A400 ; Keyboard / Display
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P3DA := $A402 ; Serial I/O
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DDPADA := $A401 ; Data-Direction Register for PADA
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DDP3DA := $A403 ; Data-Direction Register for P3DA
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WEDRTA := $A404 ; Write-Edge Detect Read Timer A
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WEDRFA := $A405 ; Write-Edge Detect Read-Int Flags A
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WEDRTB := $A406 ; Write-Edge Detect Read Timer B
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WEDRFB := $A407 ; Write-Edge Detect Read-Int Flags B
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TIM0001 := $A41C ; Timer / 1
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TIM0008 := $A41D ; Timer / 8
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TIM0064 := $A41E ; Timer / 64
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TIM1024 := $A41F ; Timer / 1024
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;
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; 6522 (U25)
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;
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OR1A := $A001 ; Input / Output Register for 1A
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DDR1A := $A003 ; Data-Direction Register for 1A
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OR1B := $A000 ; Input / Output Register for 1B
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DDR1B := $A002 ; Data-Direction Register for 1B
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TIC1L := $A004 ;
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TIC1H := $A005 ;
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TIL1L := $A006 ;
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TIL1H := $A007 ;
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T2L1L := $A008 ;
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T2C1L := $A008 ;
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T2C1H := $A009 ;
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SR1 := $A00A ;
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ACR1 := $A00B ;
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PCR1 := $A00C ;
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IFR1 := $A00D ;
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IER1 := $A00E ;
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DR1A := $A00F ;
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;
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; 6522 (U28)
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;
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OR2A := $A801 ; Input / Output Register for 2A
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DDR2A := $A803 ; Data-Direction Register for 2A
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OR2B := $A800 ; Input / Output Register for 2B
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DDR2B := $A802 ; Data-Direction Register for 2B
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TIC2L := $A804 ;
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TIC2H := $A805 ;
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TIL2L := $A806 ;
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TIL2H := $A807 ;
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T2L2L := $A808 ;
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T2C2L := $A808 ;
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T2C2H := $A809 ;
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SR2 := $A80A ;
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ACR2 := $A80B ;
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PCR2 := $A80C ;
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IFR2 := $A80D ;
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IER2 := $A80E ;
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DR2A := $A80F ;
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;
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; 6522 (U29)
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;
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OR3A := $AC01 ; Write-Protect RAM, Debug On/Off, I/O-3A
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DDR3A := $AC03 ; Data-Direction Register for 3A
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OR3B := $AC00 ; Input / Output Register for 3B
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DDR3B := $AC02 ; Data-Direction Register for 3B
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TIC3L := $AC04 ;
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TIC3H := $AC05 ;
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TIL3L := $AC06 ;
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TIL3H := $AC07 ;
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T2L3L := $AC08 ;
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T2C3L := $AC08 ;
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T2C3H := $AC09 ;
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SR3 := $AC0A ;
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ACR3 := $AC0B ;
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PCR3 := $AC0C ;
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IFR3 := $AC0D ;
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IER3 := $AC0E ;
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DR3A := $AC0F ;
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