Motorola Semiconductor Engineering Bulletin EB422 Enhanced

Freescale Semiconductor, Inc...
Engineering Bulletin
Freescale Semiconductor, Inc.
0025 *
0026 * Altered PLL startup behaviour as follows :
0027 * 1/ Changed programmed value read from PORT B to F
0028 * 2/ If $FF is found then use value $CC instead. This
0029 * winds a 38.4KHz crystal to 8MHz (i.e. * 208).
0030 * 3/ Default delay of 10ms has been adjusted for a
0031 * 38.4KHz crystal rather than 640KHz.
0032 *
0033 * INITIAL subroutine removed since it was useless and
0034 * PROGRAM enhanced to move the EPROM block iff the
0035 * destination address clashes with the boot ROM
0036 ***************************************************************
0037
0038 * Equates (registers in direct space)
0039 *
0040 0004 PORTB EQU $04
0041 0005 PORTF EQU $05
0042 0008 PORTD EQU $08
0043 0009 DDRD EQU $09
0044 *
0045 000e TCNT EQU $0E
0046 0016 TOC1 EQU $16
0047 0023 TFLG1 EQU $23
0048 002e PLLCR EQU $2E
0049 002f SYNR EQU $2F
0050 * Bit equates for TFLG1
0051 0080 OC1F EQU $80
0052 *
0053 002b EPROG EQU $2B
0054 * Bit equates for EPROG
0055 0020 ELAT EQU $20
0056 0001 EPGM EQU $01
0057 *
0058 0035 BPROT EQU $35
0059 0037 INIT2 EQU $37
0060 003b PPROG EQU $3B
0061 003d INIT EQU $3D
0062 003e TEST1 EQU $3E
0063 003f CONFIG EQU $3F
0064 *
0065 0070 SCBD EQU $70
0066 0072 SCCR1 EQU $72
0067 0073 SCCR2 EQU $73
0068 0074 SCSR1 EQU $74
0069 0075 SCSR2 EQU $75
0070 0076 SCDRH EQU $76
0071 0077 SCDRL EQU $77
0072
0073 * Memory configuration equates
0074 *
0075 0d00 EEPMSTR EQU $0D00 Start of EEPROM
0076 0fff EEPMEND EQU $0FFF End of EEPROM
0077 *
0078 4000 EPRMSTR EQU $4000 Start of EPROM
0079 ffff EPRMEND EQU $FFFF End of EPROM
0080 *
0081 0080 RAMSTR EQU $0080 Start of RAM
0082 087f RAMEND EQU $087F End of RAM
0083
0084 be40 BOOTSTR EQU $BE40 Start of boot ROM
0085 bfff BOOTEND EQU $BFFF End of boot ROM
0086 00b0 BOOTHI EQU $B0 Hi BR address
0087 0080 BOOTLO EQU $80 Shifted BR address
0088
EB422
20 MOTOROLA
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