📄 ecp_i2c_hw.lst
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R15 = 0 on good cmd
466 000364 0124 jeq WriteCmdValid ;
Cmd is okay
467 000366 A13C jmp I2CWriteProcessed ;
Offset is bad, abort
468 000368 C045.... WriteCmdValid mov.b R5,ECPCommand
469 00036C 0555 add R5,R5 ;
Multiply the cmd
by 2
470 00036E 0055 add R5,PC ;
and jump to cmd
routine
471 000370 053C jmp WriteCMD0x00
472 000372 053C jmp WriteCMD0x01
473 000374 0D3C jmp WriteCMD0x02
474 000376 0F3C jmp WriteCMD0x03
475 000378 133C jmp WriteCMD0x04
476 00037A 1B3C jmp WriteCMD0x05
477 00037C
478 00037C
479 00037C ; Offset 0x00 - ECP Command Register
480 00037C WriteCMD0x00
; NULL command
481 00037C 963C jmp I2CWriteProcessed
; We are done
482 00037E
483 00037E WriteCMD0x01
; COLD REBOOT
484 00037E B012.... call #PowerDownEVM
; Turn EVM off
485 000382 B012.... call #SWDelay500ms
486 000386 B012.... call #SWDelay500ms
487 00038A 3040.... mov #RESET,PC
; Jump to
reset vector
488 00038E 8D3C jmp I2CWriteProcessed
; We are done
489 000390
490 000390 WriteCMD0x02
; WARM RESET
491 000390 B012.... call #DSPSoftReset
; Reset DSP
492 000394 8A3C jmp I2CWriteProcessed
; We are done
493 000396
494 000396 WriteCMD0x03
; WARM RESET INIT
495 000396 31400004 mov.w #0x0400,SP
; Init stackpointer
496 00039A 3040.... mov #WARMENTRY,PC
;
Jump to
warm
reset
497 00039E 853C jmp I2CWriteProcessed
; We are done
498 0003A0
499 0003A0 WriteCMD0x04
; POWER OFF
500 0003A0
501 0003A0 B012.... call #PowerDownEVM
; Shut down power supplies
502 0003A4 55422000 WaitButton mov.b &P1IN,R5
; Read the
RS switch
503 0003A8 55F3 and.b #0x01,R5
504 0003AA FC23 jnz WaitButton
; Button not pushed
505 0003AC 3040.... mov #RESET,PC
; Jump to
reset
vector
506 0003B0 7C3C jmp I2CWriteProcessed
; We are done
507 0003B2
508 0003B2 WriteCMD0x05
; Reinitialize IR Remote
509 0003B2 B012.... call #InitIR
510 0003B6 793C jmp I2CWriteProcessed
511 0003B8
512 0003B8
513 0003B8 ; Offset 0x01 - ECP Status Register
514 0003B8 ; Writing zeros to these bits clears them.
Writing one has no effect
515 0003B8 ; This register is not actually mapped to a
port.
516 0003B8 35E3 WriteOffset0x01 inv R5
; Invert the user write
517 0003BA C0C5.... bic.b R5,ECPStatus
; Clear the
desired bits
518 0003BE 753C jmp I2CWriteProcessed
; We are done
519 0003C0 ; Offset 0x02 - Reset Output Register
520 0003C0 4645 WriteOffset0x02 mov.b R5,R6
; Copy User
Write
521 0003C2 76F08000 and.b #AIC33_RSTz,R6
; Mask Port 2 resets
522 0003C6 57422800 mov.b &P2IN, R7
; Read
port
2
523 0003CA 77C08000 bic.b #AIC33_RSTz,R7
; Clear the current state
524 0003CE 47D6 bis.b R6,R7
; Set the new
state
525 0003D0 C2472900 mov.b R7,&P2OUT
; Write it
out
526 0003D4 4645 mov.b R5,R6
; Copy User
Write
527 0003D6 76F04500 and.b #DC5_RSTz+TV_RSTz+CPLD
_RSTz, R6 ; Mask Port 3 resets
528 0003DA 57421800 mov.b &P3IN,R7
; Read
port 3
529 0003DE 77C04500 bic.b #DC5_RSTz+TV_RSTz+CPLD
_RSTz, R7 ; Clear old state
530 0003E2 47D6 bis.b R6,R7
; Set new
state
531 0003E4 C2471900 mov.b R7,&P3OUT
; Write it
out
532 0003E8 4645 mov.b R5,R6
; Copy User
Write
533 0003EA 4611 rra.b R6
; 3 right shifts
534 0003EC 4611 rra.b R6
535 0003EE 4611 rra.b R6
536 0003F0 76F01000 and.b #NOR_FLASH_RSTz,R6
; Mask out NOR_FLASH_RST
537 0003F4 4511 rra.b R5
; 2 right shifts
538 0003F6 4511 rra.b R5
539 0003F8 75F02000 and.b #IMAGER_RSTz,R5
; Mask out IMAGER_RST
540 0003FC 57421800 mov.b &P3IN,R7
; Read
port 3
541 000400 77C00A00 bic.b #BIT3+BIT1,R7
; Clear bits
542 000404 47D5 bis.b R5,R7
; Set new
bits
543 000406 47D6 bis.b R6,R7
544 000408 C2471900 mov.b R7,&P3OUT
; Write out
bits
545 00040C 4E3C jmp I2CWriteProcessed
; We are done
546 00040E ; Offset 0x03 - LED Register
547 00040E C2451D00 WriteOffset0x03 mov.b R5, &P4OUT
; Write out
to port
548 000412 4B3C jmp I2CWriteProcessed
; We are done
549 000414 ; Offset 0x04 - Input Switch Register #1
550 000414 75F04000 WriteOffset0x04 and.b #CPLD_OPT,R5
; Mask read only bits
551 000418 57423000 mov.b &P5IN,R7
; Get port
state
552 00041C 77C04000 bic.b #CPLD_OPT,R7
; Clear state
553 000420 47D5 bis.b R5,R7
; Set new
state
554 000422 C2473100 mov.b R7,&P5OUT
; Write it
out
555 000426 413C jmp I2CWriteProcessed
; We are done
556 000428 ; Offset 0x05 - Input Switch Register #2 - All
readonly, do nothing
557 000428 403C WriteOffset0x05 jmp I2CWriteProcessed
558 00042A ; Offset 0x06 - SD/MMC Status Register - All
readonly, do nothing
559 00042A 3F3C WriteOffset0x06 jmp I2CWriteProcessed
560 00042C ; Offset 0x07 - Firmware Revision Register - All
readonly, do nothing
561 00042C 3E3C WriteOffset0x07 jmp I2CWriteProcessed
562 00042E ; Offset 0x08 - Video Input Mux Control
563 00042E 75F08000 WriteOffset0x08 and.b #MUX_IMAG_5146z,R5
; Mask other bits
564 000432 57421800 mov.b &P3IN,R7
; Get
current port
state
565 000436 77C08000 bic.b #MUX_IMAG_5146z,R7
; Clear current state
566 00043A 47D5 bis.b R5,R7
; Set new
state
567 00043C C2471900 mov.b R7,&P3OUT
; Write it
out
568 000440 343C jmp I2CWriteProcessed
; We are done
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