📄 startup400.lst
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431
432 ;
433 ; Make sure we are in contiguous mode
434 ;
420009 75C7AA 435 mov ta, #0xAA ; Enable access to ACON
42000C 75C755 436 mov ta, #0x55
42000F 439D02 437 orl acon, #2 ; 24 bit mode
420012 02000000 F 438 ljmp far sanity_check ; Sanity check: Make sure 24
bit mode is on
420016 439 sanity_check:
420016 75C7AA 440 mov ta, #0xAA ; Enable access to MCON
420019 75C755 441 mov ta, #0x55
42001C 75C6AF 442 mov mcon, #0xAF ; Relocate RAM, data memory
42001F 75C7AA 443 mov ta, #0xAA ; Enable access to ACON
420022 75C755 444 mov ta, #0x55
420025 439D04 445 orl acon, #0x04 ; Extended stack
446
447 ;
448 ; Use the minimum number of stretch cycles on MOVX memory
449 ;
420028 538EF8 450 anl ckcon, #0f8h
AX51 MACRO ASSEMBLER STARTUP400 04/04/06 14:47:23 PAGE 8
451 ; orl ckcon, #007h
452 ;
453 ; Make sure we are in a known state with respect to
454 ; our fancy data pointers and register banks
455 ;
42002B 758600 456 mov dps, #0
42002E 75D000 457 mov psw, #0
458
459 ;
460 ; Set stack to 0 (we lose one byte, but don't
461 ; have to know the size)
462 ;
420031 758100 463 mov sp,#0
420034 759B00 464 mov esp,#0
465
466 ;
467 ; Do the Crystal Multiplier
468 ;
469 $if XTALMULT = 2
startup_setxtal_mult_2:
;
; Multiply crystal frequency by 2
;
mov pmr, #10000010b ; Set for crystal * 2
mov pmr, #10010010b ; Enable multiplier
WaitCrystal:
mov a, exif ; Wait for multiplier to be r
eady
jnb acc.3, WaitCrystal ; Jump if CKRY is low
mov pmr, #00010010b ; Go to crystal * 2
$elseif XTALMULT = 4
startup_setxtal_mult_4:
;
; Multiply crystal frequency by 4
;
mov pmr, #10000000b ; Set to power up value
mov pmr, #10001000b ; Set for crystal * 4
mov pmr, #10011000b ; Enable multiplier
WaitCrystal4:
mov a, exif ; Wait for multiplier to be r
eady
jnb acc.3, WaitCrystal4 ; Jump if CKRY is low
mov pmr, #00011000b ; Go to crystal * 4
$endif
494
495 ; Enable the serial0, using timer 2 at 115200
496 ; Use this equation for the reloads:
497 ; reload H:L = 65536 - (oscillator / (32 * baud))
498 ; We now use User Configurable Equates for the serial
499 ; port settings. The default is for 115200, which
500 ; yeilds the following:
501 ; 65536 - (14745600 / (32 * 115200)) = 65536 - (14745600 / 3686400)
502 ; = 65536 - 4
503 ; = 65532
504 ; = 0xFFFC
420037 75985A 505 mov scon0, #5Ah ; 10 bit serial 0, use timer
baud rate, enable recieving
42003A 75CBFF 506 mov rcap2h, #High(TIMER_RELOAD) ; Set timer reload high byte
42003D 75CAFB 507 mov rcap2l, #Low(TIMER_RELOAD) ; Set timer reload low bye
420040 75C830 508 mov t2con, #30h ; Enable timer 2 for serial p
ort
420043 D2CA 509 setb tr2 ; Set timer 2 to run
510
511 ; Make sure that we can output to the serial port
420045 D299 512 setb ti
AX51 MACRO ASSEMBLER STARTUP400 04/04/06 14:47:23 PAGE 9
513
514 $if (USE_REENTRANT_STACK <> 0)
mov ?C_XBP,#HIGH XBPSTACKTOP
mov ?C_XBP+1,#LOW XBPSTACKTOP
$endif
518
519
520 $if SETMAC = 1
mov r0, #MAC_LSB
mov r1, #MAC_2
mov r2, #MAC_3
mov r3, #MAC_4
mov r4, #MAC_5
mov r5, #MAC_MSB
$endif
529
530 $if SETMAC = 2
;
; User MAC Code
;
; Insert code here that will get a MAC address in registers
; r5:r4:r3:r2:r1:r0, with r5 the MSB.
;
$endif
539
540 $if SETMAC > 0
push r0_b0
push r1_b0
push r2_b0
push r3_b0
push r4_b0
push r5_b0
mov a, #'C'
push acc
mov a, #'A'
push acc
mov a, #'M'
push acc
$endif
555
556
557
558
559 IF ERASE_XDATA_LEN <> 0
mov dptr, #ERASE_XDATA_ADDR
mov r7, #BYTE0 (ERASE_XDATA_LEN)
IF (BYTE0 (ERASE_XDATA_LEN)) <> 0
mov r6, #(BYTE1 ERASE_XDATA_LEN) +1
ELSE
mov r6, #BYTE1 (ERASE_XDATA_LEN)
ENDIF
IF (BYTE1 (ERASE_XDATA_LEN)) <> 0
mov r5, #(BYTE2 ERASE_XDATA_LEN) +1
ELSE
mov r5, #BYTE2 (ERASE_XDATA_LEN)
ENDIF
clr a
erase_xdata_loop:
movx @dptr, a
inc dptr
djnz r7, erase_xdata_loop
djnz r6, erase_xdata_loop
djnz r5, erase_xdata_loop
AX51 MACRO ASSEMBLER STARTUP400 04/04/06 14:47:23 PAGE 10
endif
580
420047 12000000 E 581 lcall init_romexport
582
583
584 if ERASE_IDATA <> 0
mov r0, #ERASE_IDATA - 1
clr a
erase_idata_loop:
mov @r0, a
djnz r0, erase_idata_loop
endif
591
592
42004B 02000000 E 593 ljmp ?C_START
594 end
AX51 MACRO ASSEMBLER STARTUP400 04/04/06 14:47:23 PAGE 11
SYMBOL TABLE LISTING
------ ----- -------
N A M E T Y P E V A L U E ATTRIBUTES
?C_CPURESET?0 . . . . . . . . C SEG 42004FH REL=ABS, ALN=BYTE
?C_START. . . . . . . . . . . C ADDR ------- EXT
?C_STARTUP. . . . . . . . . . C ADDR 00420000H R SEG=?C_CPURESET?0
AC. . . . . . . . . . . . . . B ADDR 00D0H.6 A
ACC . . . . . . . . . . . . . D ADDR 00E0H A
ACON. . . . . . . . . . . . . D ADDR 009DH A
AP. . . . . . . . . . . . . . D ADDR 009CH A
B . . . . . . . . . . . . . . D ADDR 00F0H A
BCUC. . . . . . . . . . . . . D ADDR 00E7H A
BCUD. . . . . . . . . . . . . D ADDR 00E6H A
BPA1. . . . . . . . . . . . . D ADDR 00DAH A
BPA2. . . . . . . . . . . . . D ADDR 00DBH A
BPA3. . . . . . . . . . . . . D ADDR 00DCH A
C0C . . . . . . . . . . . . . D ADDR 00A3H A
C0IE. . . . . . . . . . . . . B ADDR 00E8H.6 A
C0IP. . . . . . . . . . . . . B ADDR 00F8H.6 A
C0IR. . . . . . . . . . . . . D ADDR 00A5H A
C0M10C. . . . . . . . . . . . D ADDR 00B7H A
C0M11C. . . . . . . . . . . . D ADDR 00BBH A
C0M12C. . . . . . . . . . . . D ADDR 00BCH A
C0M13C. . . . . . . . . . . . D ADDR 00BDH A
C0M14C. . . . . . . . . . . . D ADDR 00BEH A
C0M15C. . . . . . . . . . . . D ADDR 00BFH A
C0M1C . . . . . . . . . . . . D ADDR 00ABH A
C0M2C . . . . . . . . . . . . D ADDR 00ACH A
C0M3C . . . . . . . . . . . . D ADDR 00ADH A
C0M4C . . . . . . . . . . . . D ADDR 00AEH A
C0M5C . . . . . . . . . . . . D ADDR 00AFH A
C0M6C . . . . . . . . . . . . D ADDR 00B3H A
C0M7C . . . . . . . . . . . . D ADDR 00B4H A
C0M8C . . . . . . . . . . . . D ADDR 00B5H A
C0M9C . . . . . . . . . . . . D ADDR 00B6H A
C0RE. . . . . . . . . . . . . D ADDR 00A7H A
C0RMS0. . . . . . . . . . . . D ADDR 0096H A
C0RMS1. . . . . . . . . . . . D ADDR 0097H A
C0S . . . . . . . . . . . . . D ADDR 00A4H A
C0TE. . . . . . . . . . . . . D ADDR 00A6H A
C0TMA0. . . . . . . . . . . . D ADDR 009EH A
C0TMA1. . . . . . . . . . . . D ADDR 009FH A
C_T2. . . . . . . . . . . . . B ADDR 00C8H.1 A
CKCON . . . . . . . . . . . . D ADDR 008EH A
COR . . . . . . . . . . . . . D ADDR 00CEH A
CP_RL2. . . . . . . . . . . . B ADDR 00C8H.0 A
CSRA. . . . . . . . . . . . . D ADDR 00E4H A
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