Motorola DSP56367 User Manual page 378

Bootstrap ROM Contents
PROMADDR equ $FF1000
MA EQU 0
MB EQU 1
MC EQU 2
MD EQU 3
;;
;;;;;;;;;;;;;;;;;;;; DSP I/O REGISTERS ;;;;;;;;;;;;;;;;;;;;;;;;
;;
M_AAR1 EQU $FFFFF8
M_OGDB EQU $FFFFFC
M_HPCR EQU $FFFFC4
M_HSR EQU $FFFFC3
M_HORX EQU $FFFFC6
HRDF EQU $0
HF0 EQU $3
HEN EQU $6
M_HRX EQU $FFFF94
M_HCSR EQU $FFFF91
M_HCKR EQU $FFFF90
HRNE EQU 17
HI2C EQU 1
HCKFR EQU 4
HFM0 EQU 12
HFM1 EQU 13
ORG PL:$ff0000,PL:$ff0000
START
movep #$0,X:M_OGDB
nop
nop
nop
nop
nop
clr a #$0,r5
jset #MD,omr,OMR1XXX
jset #MC,omr,SHILD
jclr #MB,omr,EPROMLD
jset #MA,omr,RESERVED
;========================================================================
; This is the routine that jumps to the internal Program ROM.
; MD:MC:MB:MA=0010
A-4
; mapped as P from $D00000 to
; $DFFFFF, active low
; Starting PROM address
; Address Attribute Register 1
; OnCE GDB Register
; Host Polarity Control Register
; Host Status Register
; Host Receive Register
; Host Receive Data Full
; Host Flag 0
; Host Enable
; SHI Receive FIFO
; SHI Control/Status Register
; SHI Clock Control Register
; SHI FIFO Not Empty flag
; SHI I2C Enable Control Bit
; SHI I2C Clock Freeze Control Bit
; SHI I2C Filter Mode Bit 0
; SHI I2C Filter Mode Bit 1
; bootstrap code starts at $ff0000
; enable OnCE
; 5 NOP instructions, needed for test procedure
; clear a and init R5 with 0
; If MD:MC:MB:MA=1xxx go to OMR1XXX
; If MD:MC:MB:MA=01xx, go load from SHI
; If MD:MC:MB:MA=0001, go load from EPROM
; If MD:MC:MB:MA=0011, go to RESERVED
DSP56367 MOTOROLA