; last edited 3 Oct. 1982 12:24 pm PDT (Sunday) by GW & DP
; SYSTEM LCC
; TITLE 'GNAT CONTROL PROGRAM ADAPTED FROM 2600 CONTROL PROGRAM'
; B3 ROM SOURCE FILE.
; INCLUDES TIMING CHANGES FOR THE MOHAWK POWER SUPPLY.
; REGISTER ASSIGNMENTS
;
;L0 MASTER COUNTER LSB L8 MOTION SENSOR CTR
;L1 MASTER COUNTER MSB L9 FLAGS
;L2 E COUNTER L10 X CTR
;L3 LF COUNTER L11 TEMPORARY REG (STATE 6)
;L4 PROGRAM COUNTER L12 FUSER CNTR
;L5 WATCHDOG TIMER L13 INPUT BYTE
;L6 STATE COUNTER L14 INPUT BYTE
;L7 COUNTER INSTRUCTIONS & FLAGS L15 OUTPUT BYTE
;
;
;L7 COUNTER INSTRUCTIONS & FLAGS
; COUNTER INSTRUCTIONS: 1=INCREMENT
; 0=DISABLE
; BIT
; 0 M COUNTER INCREMENT FLAG
; 1 E COUNTER INCREMENT FLAG
; 2 COIN FLAG
; 3 START PRINT FLAG
; 4 LF FLAG
; 5 MOTION SENSOR ENABLE FLAG
; 6 MOTION SENSOR DELAY (D) FLAG
; 7 PWRUP FLAG
;
;
;L9 FLAGS(FLG2)
; BIT
; 0 X CNTR ENABLE FLAG
; 1 F CNTR ENABLE FLAG
; 2 DIAGNOSTIC FLAG
; 3 1 SHOT FLAG
; 4
; 5
; 6
; 7
;
; INPUT ADDRESSES
; IN1(L13) IN2(L14)
; ADDR 0 ADDR 1
;
;D0 KEYBOARDROW1 D0
;D1 KEYBOARDROW2 D1
;D2 KEYBOARDROW3 D2
;D3 KEYBOARDROW4 D3
;D4 PAPERTRAYSENSE D4 MOTION SENSE
;D5 ZapThermostat D5 ZeroXing (Zero-crossing)
;D6 D6
;D7 D7
;
;
;
;
; OUTPUT ADDRESSES
; OUT0
; addr 03;
; THE OUTPUTS TO THE SEVEN SEGMENT DISPLAY AND THE INDICATOR LEDS ARE STROBED
; BY SEPERATE ENABLES IN ADDR 04
; D0 LED SEGMENT A
; D1 LED SEGMENT B
; D2 LED SEGMENT C OFFLINE LED
; D3 LED SEGMENT D ONLINE LED
; D4 LED SEGMENT E DIAGNOSTICS LED
; D5 LED SEGMENT F
; D6 LED SEGMENT G
; D7 ZeroXing mask (Zero-crossing mask)
; OUT1
; addr 04
; D0 ENABLE INDICATOR LEDS
; D1 SEVEN SEGMENT UNITS ENABLE
; D2 SEVEN SEGMENT TENS ENABLE
; D3
; D4
; D5 CHARGE ON
; D6
; D7
; OUT2
; addr 05
; D0 Test1 --Generates the test pattern.
; D1 DEVELOPER BIAS ON
; D2
; D3
; D4
; D5
; D6
; D7
; OUT3
; addr 06
; D0
; D1 MAINDRIVE/DOCTOR BLADE
; D2 VACUUM FAN/ FUSER FAN
; D3 FUSER TRIAC
; D4 DEVELOPER CLUTCH
; D5 SCAN SOL
; D6 Billing Meter
; D7
; addr 10
; KEYBOARD COLUMN 1
; addr 20
; KEYBOARD COLUMN 2
; addr 40
; KEYBOARD COLUMN 3
; addr 80
; KEYBOARD COLUMN 4
; COUNTER/TIMER FUNCTIONS
;
; M CNTR L0 L1
; MASTER COUNTER CONTROLS GENERAL MACHINE TIMING.
; ALSO USED TO ENTER DIAGNOSTIC MODE.
;
; E CNTR L2
; STARTED AT MC = 280. CONTROLS
; MOTION SENSOR ENABLE/DISABLE AND BILLING. TERMINAL
; COUNT OF 255 CAUSES E CNTR TO BE DISABLED AND
; ENABLES THE F CNTR. CHARGE TURNOFF IS ALSO
; CONTROLLED BY THE E CNTR.
;
; F CNTR L12
; FUSER TIME OUT COUNTER STARTS AT E CNTR=255 BUT HELD
; CLEAR IF THE E CNTR IS ENABLED.
;
; P CNTR L4
; PROGRAM COUNTER INCREMENTED FOR EVERY COPY CYCLE
; COUNTS COPIES MADE. P CNTR IS INITIALIZED=1.
;
; WATCHDOG TIMER L5
; BIT 0 IS THE WDT FLAG WHICH IS SET UPON RECIEPT OF AN
; INTERUPT AND ALLOWS ENTRY INTO THE LF ROUTINE WHERE IT IS
; RESET.
;
; STATE CNTR L6
; THE STATE COUNTER KEEPS TRACK OF MACHINE STATES AND
; ALLOWS ENTRY INTO A STATE WHEN APPROPRIATE.
;
; MS CNTR L8
; MOTION SENSOR COUNTER INCREMENTED IF ENABLED
; CLEARED ON NEGATIVE EDGES OF MOTION SENSOR INPUT
; PROGRAM BRANCHES TO THE JAM ROUTINE IF VALUE OF
; 10 IS REACHED.
;
; X CNTR L10
; X COUNTER IS USED IN STATE 1 TO ACHIEVE A 5.25 SECOND
; TIME CHECK FOR OFF HOME CONDITION DURING STARTUP.
; X COUNTER IS ALSO USED IN STATE 5 TO CONTROL FLASH
; RATE OF THE JAMLED WHILE IN THE ZAP MODE.
;
;
;
; TIMING CHANGES FOR B3 NECISITATED BY
; INCLUSION OF THE MOHAWK HIGH VOLTAGE POWER
; SUPPLY.
;
; 1. Deleted.
;
; 2. PREVENT THE COROTRONS FROM GOING OFF
; IF THE PRINT SWITCH IS MADE PRIOR TO
; THE NORMAL COROTRON TURN-OFF TIME
; DURING CYCLE OUT.
;
; 3. IF THE PRINT SW IS MADE AFTER COROTRON
; TURN-OFF AND BEFORE 7.5 SEC. HAVE PASSED
; SINCE THE END OF SCAN TURN ON THE
; COROTRONS AT 7.5 SEC. AND START A SCAN
; AT 8.0 SEC.
;
; 4. IF THE PRINT SW IS MADE BETWEEN 7.5SEC.AND
; CYCLE OUT TURN ON COROTRONS AT 10.1 SEC.
; AND START A SCAN AT 10.6 SEC.
;
; J. R.
; 18JUN79
;
;
; ALSO REQUIRED;
; SENSE JAM RECOVERY( POWER ON RESET) AND TURN CHARGE
; ON WITH DRIVES FOR COPY FOLLOWING A JAM TO AVOID THE
; BACKGROUND STREAK. THIS WILL ALSO OCCUR ANY TIME THAT
; POWER IS BROKEN AND RESTORED AND WILL RESULT IN SOME
; ADDITIONAL TONER CONSUMPTION BUT IS ACCEPTABLE
; TO THE PROGRAM.
; JC
; 27JUN79
; STATE DESCRIPTIONS:
; STATE1--CYCLE UP
;
; SET FANS EXPOSURE AND DRIVES AT M1.
;
; CHARGE SWITCHED ON AT 1.43 SECONDS(M86) AT ST121
; STATE2--COPY CYCLE
;
; SET SCAN SOLENOID AT M1
;
; RESET SCAN SOLENOID AT M60
;
; AT M280 SET FUSER AND ENABLE EC TEST
; FOR PC GREATER OR EQUAL TO SELECTOR SWITCH AND SET
; COIN FLAG IF TRUE
;
; AT M316 TEST COIN FLAG AND ADVANCE TO STATE3 IF TRUE
; ELSE RESET MC AND REPEAT STATE2
; STATE3--CYCLE DOWN
;
; RESET EXPOSURE AT M140
;
; RESET FANS AND DRIVES AT M515
;
; ADVANCE TO STATE4 AT M575
;
; TEST PRINT FLAG WHILE IN STATE3 AND JUMP TO INITIAL1
; TO INITIATE ANOTHER COPY CYCLE IF TRUE
; STATE4--STANDBY
;
; RESET MC AND CHARGEON
;
; TEST ZAP THERMOSTAT INPUT ADVANCE TO STATE5 IF 0
;
; TEST DIAGNOSTIC FLAG AND ADVANCE TO STATE6 IF TRUE
; (WILL OCCUR ONLY IN DIAGNOSTIC CODE 15 FLYBACK TIME
; TEST)
;
; TEST PRINT FLAG ADVANCE TO STATE1 IF TRUE
; STATE5--FUSER AND EXPOSURE LAMP PREHEAT
;
; RESET PRINT FLAG AND SET FUSER
;
; DELAY 3 SECONDS AND SET EXPOSURE
;
; FLASH JAMLED AT 2HZ RATE
;
; RESET EXPOSURE AFTER 4MINUTES AND 3 SECONDS
; IF STILL IN ZAP MODE
;
; RESET FUSER AND EXPOSURE AND ADVANCE TO STATE4 WHEN
; ZAP THERMOSTAT INPUT= 1
; STATE6--DIAGNOSTICS MODE
;
; SELECTOR SWITCH=00 MONITOR BIT 3 OF THE LF COUNTER
;
; SELECTOR SWITCH=01 MONITOR PRINT SWITCH INPUT
;
; SELECTOR SWITCH=03 PREPARE BILLING OUTPUT
;
; SELECTOR SWITCH=04 PREPARE FUSER AND FANS OUTPUTS
;
; SELECTOR SWITCH=05 MONITOR ZAP INPUT
; PREPARE FANS OUTPUT
;
; SELECTOR SWITCH=06 MONITOR 50/60 HZ SELECT INPUT
; PREPARE EXPOSURE OUTPUT
;
; SELECTOR SWITCH=07 PREPARE CHARGE FANS DRIVES OUTPUTS
;
; SELECTOR SWITCH=08 MONITOR MOTION SENSOR INPUT
; PREPARE CHARGE FANS DRIVES
; AND EXPOSURE OUTPUTS
;
; SELECTOR SWITCH=09 MONITOR HOME SWITCH INPUT
; PREPARE SCAN SOLENOID OUTPUT
;
; SELECTOR SWITCH=15 PREPARE TO SET STATE CNTR=1
; SET THE DIAG FLAG AND JUMP
; TO INITIAL FOR FLYBACK TIMING
; TEST
;
;
; INPUT TESTS:
; THE INPUT SELECTED IS MONITORED AND ITS STATUS IS
; INDICATED ON THE JAMLED:
; IF LOGICAL "1" JAMLED ON
; IF LOGICAL "0" JAMLED OFF
;
;
;
; OUTPUT TESTS:
; THE OUTPUT(S) SELECTED WILL BE SWITCHED ON WHEN THE
; PRINT SWITCH IS ACTUATED
; IN THE CASE OF CODE 15 THE PROGRAM INITIATES A 15
; COPY CYCLE AND THE JAMLED IS SWITCHED ON MOMENTARILY
; IF THE FLYBACK TIME EXCEEDS .33 SECONDS
; MISC ROUTINES:
;
; ENABLE INTERUPT IF "0" CROSSING INPUT= 1
;
; DECODE E CNTR TO:
; START AND STOP MOTION SENSING
; SET AND RESET BILLING COUNTER
; ENABLE F CNTR
;
; DECODE F CNTR TO RESET FUSER
;
; MONITOR MOTION SENSOR INPUT AND CONDITION THE
; PAPER MOTION D FLAG
;
; MONITOR THE MOTION SENSOR CNTR AND JAM IF VALUE
; OF 10 IS REACHED
;
; INPUT TO IN1 AND MASK BITS 6 AND 7 OF SELECTOR SWITCH
; BYTE; INPUT TO IN2 THE REMAINDER OF INPUTS
;
; INCREMENT WATCH DOG TIMER AND TEST FOR CARRY:
; IF CARRY JAM
;
; LF (LINE FREQUENCY) ROUTINES:
;
; THE WDT FLAG IS SET AT THE INTERUPT SERVICE
; ROUTINE AT 120HZ AND WILL ALLOW ENTRY TO LF
; IF TRUE. THE WDT FLAG IS RESET AND THE LF
; CNTR IS INCREMENTED. IF THE LF CNTR INDICATES
; DIVIDE BY 2 PASSAGE THROUGH LF IS ALLOWED.
;
; THE LF ROUTINE ACCOMPLISHES:
;
; 50/60 HZ TIMING CONVERSION
;
; MC INCREMENT IF ENABLED
;
; EC INCREMENT IF ENABLED
;
; FC INCREMENT IF ENABLED
;
; XC INCREMENT IF ENABLED
;
; PC INCREMENT IF "STATE2 AND M279"
;
; MSC INCREMENT IF ENABLED
;****newstuff
; uart intialization has been added at init
; added command and status processor at interrupt
; ADDED PAGE SYNC STATUS AT STATE 2