Apple II User Manual
0119 A416 CURPOS .BLOCK 1 ;PRINTER POINTER
0120 A417 CNTH30 .BLOCK 1 ;BAUD RATE &...
0121 A418 CNTL30 .BLOCK 1 ;DELAY FOR TTY
0121 A418 CNTL30 .BLOCK 1 ;DELAY FOR TTY
0122 A419 COUNT .BLOCK 1 ;# OF LINES (0-99)
0123 A41A S1 .BLOCK 2 ;START ADDRESS
0123 A41A S1 .BLOCK 2 ;START ADDRESS
0124 A41C ADDR .BLOCK 2 ;END ADDRESS
0125 A41E CKSUM .BLOCK 2 ;CHECKSUM
0125 A41E CKSUM .BLOCK 2 ;CHECKSUM
0126 A420 S2 =BKS+6 ;VERTICAL COUNT (ONLY ON DUMP)
0127 A420
0127 A420
0128 A420 ;MONITOR REGISTERS
0129 A420 SAVPS .BLOCK 1 ;STATUS
0129 A420 SAVPS .BLOCK 1 ;STATUS
0130 A421 SAVA .BLOCK 1 ;ACCUM
0131 A422 SAVX .BLOCK 1 ;X REG
0131 A422 SAVX .BLOCK 1 ;X REG
0132 A423 SAVY .BLOCK 1 ;Y REG
0133 A424 SAVS .BLOCK 1 ;STACK POINTER
0133 A424 SAVS .BLOCK 1 ;STACK POINTER
0134 A425 SAVPC .BLOCK 2 ;PROGR COUNTER
0135 A427
0135 A427
0136 A427 ;WORK AREAS FOR PAGE ZERO SIMULATION
0137 A427 ;SIMULATE LDA (NNNN),Y ,WHERE NNNN IS ABSOLUTE
0137 A427 ;SIMULATE LDA (NNNN),Y ,WHERE NNNN IS ABSOLUTE
0138 A427 STIY .BLOCK 3 ;STA NM,Y
0139 A42A CPIY .BLOCK 3 ;CMP NM,Y OR LDA NM,Y
0139 A42A CPIY .BLOCK 3 ;CMP NM,Y OR LDA NM,Y
0140 A42D .BLOCK 1 ;RTS
0141 A42E LDIY =CPIY ;LDA NM,Y
0141 A42E LDIY =CPIY ;LDA NM,Y
0142 A42E
0143 A42E ;VARIABLES FOR TAPE
0143 A42E ;VARIABLES FOR TAPE
0144 A42E NAME .BLOCK 6 ;FILE NAME
0145 A434 TAPIN .BLOCK 1 ;IN FLG (TAPE 1 OR 2)
0145 A434 TAPIN .BLOCK 1 ;IN FLG (TAPE 1 OR 2)
0146 A435 TAPOUT .BLOCK 1 ;OUT FLG (TAPE 1 OR 2)
0147 A436 TAPTR .BLOCK 1 ;TAPE BUFF POINTER
0147 A436 TAPTR .BLOCK 1 ;TAPE BUFF POINTER
0148 A437 TAPTR2 .BLOCK 1 ;TAPE OUTPUT BUFF PTR
0149 A438 HIST =NAME ;FOUR LAST ADDR + NEXT (SINGL STEP)`
0149 A438 HIST =NAME ;FOUR LAST ADDR + NEXT (SINGL STEP)`
0150 A438 BLK =$0115 ;BLOCK COUNT
0151 A438 TABUFF =$0116 ;TAPE BUFFER (I/O)
0151 A438 TABUFF =$0116 ;TAPE BUFFER (I/O)
0152 A438 BLKO =$0168 ;OUTPUT BLOCK COUNT
0153 A438 TABUF2 =$00AD ;OUTPUT BUFF WHEN ASSEMB (PAG0)
0153 A438 TABUF2 =$00AD ;OUTPUT BUFF WHEN ASSEMB (PAG0)
0154 A438 DIBUFF .BLOCK 40 ;DISPLAY BUFFER
0155 A460
0155 A460
0156 A460 ;VARIABLES USED IN PRINTING
0157 A460 IBUFM .BLOCK 20 ;PRINTER BUFFER
0157 A460 IBUFM .BLOCK 20 ;PRINTER BUFFER
0158 A474 IDIR .BLOCK 1 ;DIRECTION == 0=>+ , FF=>-
0159 A475 ICOL .BLOCK 1 ;COLUMN LEFTMOST=0,RIGHTMOST=4
0159 A475 ICOL .BLOCK 1 ;COLUMN LEFTMOST=0,RIGHTMOST=4
0160 A476 IOFFST .BLOCK 1 ;OFFSET 0=LEFT DGT,1=RIGHT DGT
0161 A477 IDOT .BLOCK 1 ;# OF LAST DOT ENCOUNTERED
0161 A477 IDOT .BLOCK 1 ;# OF LAST DOT ENCOUNTERED
0162 A478 IOUTL .BLOCK 1 ;LOWER 8 OUTPUTS(8 COLS ON RIGHT)
0163 A479 IOUTU .BLOCK 1 ;UPPER 2 DIGITS
0163 A479 IOUTU .BLOCK 1 ;UPPER 2 DIGITS
0164 A47A IBITL .BLOCK 1 ;1 BIT MSK FOR CURRENT OUTPUT
0165 A47B IBITU .BLOCK 1
0165 A47B IBITU .BLOCK 1
0166 A47C IMASK .BLOCK 1 ;MSK FOR CURRENT ROW
0167 A47D JUMP .BLOCK 2 ;INDIR & ADDR OF TABL FOR CURR ROW
0167 A47D JUMP .BLOCK 2 ;INDIR & ADDR OF TABL FOR CURR ROW
0168 A47F
0169 A47F ;VARIABLES FOR KEYBOARD
0169 A47F ;VARIABLES FOR KEYBOARD
0170 A47F ROLLFL .BLOCK 1 ;SAVE LAST STROBE FOR ROLLOVER
0171 A480 KMASK =CPIY ;TO MASK OFF CTRL OR SHIFT
0171 A480 KMASK =CPIY ;TO MASK OFF CTRL OR SHIFT
0172 A480 STBKEY =CPIY+1 ;STROBE KEY (1-8 COLUMNS)
0173 A480
0173 A480
0174 A480 ; I/O ASSIGNMENT
0175 A480 *=$A480
0175 A480 *=$A480
0176 A480 DRA2 .BLOCK 1 ;DATA REG A
0177 A481 DDRA2 .BLOCK 1 ;DATA DIR REG A
0177 A481 DDRA2 .BLOCK 1 ;DATA DIR REG A
0178 A482 DRB2 .BLOCK 1 ;DATA REG B
0179 A483 DDRB2 .BLOCK 1 ;DATA DIR REG B
0179 A483 DDRB2 .BLOCK 1 ;DATA DIR REG B
0180 A484