📄 boot_v2.a66
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$MODV2 ; Define XC166 C166v2 mode
$segmented
; Special Function Register Addresses
ADDRSEL1 EQU 0EE1EH
ADDRSEL2 EQU 0EE26H
ADDRSEL3 EQU 0EE2EH
ADDRSEL4 EQU 0EE36H
ADDRSEL5 EQU 0EE3EH
ADDRSEL6 EQU 0EE46H
ADDRSEL7 EQU 0EE4EH
CPUCON1 DEFR 0FE18H
CPUCON2 DEFR 0FE1AH
EBCMOD0 EQU 0EE00H
EBCMOD1 EQU 0EE02H
FOCON DEFR 0FFAAH
FCONCS0 EQU 0EE12H
FCONCS1 EQU 0EE1AH
FCONCS2 EQU 0EE22H
FCONCS3 EQU 0EE2AH
FCONCS4 EQU 0EE32H
FCONCS5 EQU 0EE3AH
FCONCS6 EQU 0EE42H
FCONCS7 EQU 0EE4AH
RSTCON EQU 0F1E0H
SP DEFR 0FE12H
SPSEG DEFR 0FF0CH
STKOV DEFR 0FE14H
STKUN DEFR 0FE16H
SYSCON1 DEFR 0F1DCH
SYSCON3 DEFR 0F1D4H
PLLCON DEFR 0F1D0H
TCONCS0 EQU 0EE10H
TCONCS1 EQU 0EE18H
TCONCS2 EQU 0EE20H
TCONCS3 EQU 0EE28H
TCONCS4 EQU 0EE30H
TCONCS5 EQU 0EE38H
TCONCS6 EQU 0EE40H
TCONCS7 EQU 0EE48H
VECSEG DEFR 0FF12H
WDTCON DEFR 0FFAEH
;* Serial Interface *
S0BG DEFR 0FEB4H
S0CON DEFR 0FFB0H
S0EIC DEFR 0FF70H
S0RBUF DEFR 0FEB2H
S0RIC DEFR 0FF6EH
S0TBUF DEFR 0FEB0H
S0TBIC DEFR 0F19CH
S0TIC DEFR 0FF6CH
S0STP BIT S0CON.3
S0REN BIT S0CON.4
S0PEN BIT S0CON.5
S0FEN BIT S0CON.6
S0OEN BIT S0CON.7
S0PE BIT S0CON.8
S0FE BIT S0CON.9
S0OE BIT S0CON.10
S0ODD BIT S0CON.12
S0BRS BIT S0CON.13
S0LB BIT S0CON.14
S0R BIT S0CON.15
S0TIE BIT S0TIC.6
S0TIR BIT S0TIC.7
S0TBIE BIT S0TBIC.6
S0TBIR BIT S0TBIC.7
S0RIE BIT S0RIC.6
S0RIR BIT S0RIC.7
S0EIE BIT S0EIC.6
S0EIR BIT S0EIC.7
; Settings for ADDRSEL calculation (do not change!)
KB EQU 0x400 ; define KB constant for CS _SIZE calculation
MB EQU 0x400*KB ; define MB as 1024KB
;
;-----------------------------------------------------------------------------
; This file is part of the C166 Compiler package
; Copyright KEIL ELEKTRONIK GmbH 1993 - 2001
;-----------------------------------------------------------------------------
; BOOT_V2.A66: This code is executed after processor reset when the
; bootstrap mode is enabled and provides the initialization
; of the XC166/Super10 processor and downloading of MONITOR.
;
;-----------------------------------------------------------------------------
;
; Definitions for SYSCON and BUSCON0 Register:
; --------------------------------------------
$INCLUDE (ConfigV2.INC)
INT_ADR_SEG EQU %VECTAB >> 16 ; Interrupt Vector offset if MONITOR 166
SSKDEF 7 ; unlimited System stack size
WR_MEM EQU 1 ; write memory
GO_COMMAND EQU 6 ; go command
GET_MON_SUM EQU 16 ; get monitor checksum
E_NOERROR EQU 0 ; no error ACK
E_UNKNOWN EQU 1 ; unknown command len = 1
E_CHECKSUM EQU 2 ; checksum error len = 1
E_NORAM EQU 3 ; no RAM at address len = 4
STX EQU 02H ; Start of TeXt
ENQ EQU 05H ; ENQuiry
ACK EQU 06H ; ACKnowledge
DC1 EQU 11H ; Ctrl+Q
NACK EQU 15H ; Negative ACKnowledge
; Historic Parameter for old CPU's
; BOOT960 = 0: C167 CPU with 32 Byte Bootstrap loader is used
; BOOT960 = 1: C167 CPU with 960 Byte Bootstrap loader is used
$SET (BOOT960 = 0)
ASSUME DPP3 : SYSTEM
BOOTSTRAP SECTION CODE AT 0E00000H
BOOT PROC NEAR
START: DISWDT
MOV R0,#0020H ; Start of bootstrap code
MOV DPP0,#PAG START2
LAB2: BCLR S0RIR
LAB1: JNB S0RIR,LAB1 ; when CPU expects 32 Bytes
MOVB [R0],S0RBUF
CMPI1 R0,#SOF(ENDBOOT)-1
JMPR CC_NZ,LAB2
JMP START2
BOOT ENDP
START2 PROC FAR
MOV CP,#0F7D0H
MOV STKOV,#0F600H
MOV STKUN,#0F7D0H
MOV SP,#0F7D0H ; at address 0FA60H
BCLR S0RIR
BSET S0TIR
MOV DPP0,#0000H
MOV DPP1,#0001H
MOV DPP2,#0002H
MOV DPP3,#0003H
;------------------------------------------------------------------------------
; Macro for calculation of ADDRSEL values -------------
CALC_ADDRSEL MACRO sym, adr, size
IF size <= (4*KB)
sym EQU ((adr >> 8) AND 0xFFF0) OR 0
ELSEIF size <= (8*KB)
sym EQU ((adr >> 8) AND 0xFFE0) OR 1
ELSEIF size <= (16*KB)
sym EQU ((adr >> 8) AND 0xFFC0) OR 2
ELSEIF size <= (32*KB)
sym EQU ((adr >> 8) AND 0xFF80) OR 3
ELSEIF size <= (64*KB)
sym EQU ((adr >> 8) AND 0xFF00) OR 4
ELSEIF size <= (128*KB)
sym EQU ((adr >> 8) AND 0xFE00) OR 5
ELSEIF size <= (256*KB)
sym EQU ((adr >> 8) AND 0xFC00) OR 6
ELSEIF size <= (512*KB)
sym EQU ((adr >> 8) AND 0xF800) OR 7
ELSEIF size <= (1*MB)
sym EQU ((adr >> 8) AND 0xF000) OR 8
ELSEIF size <= (2*MB)
sym EQU ((adr >> 8) AND 0xE000) OR 9
ELSEIF size <= (4*MB)
sym EQU ((adr >> 8) AND 0xC000) OR 10
ELSEIF size <= (8*MB)
sym EQU ((adr >> 8) AND 0x8000) OR 11
ENDIF
ENDM
; -----------------------------------------------------
; Set CPUCON1 register
_CPC1 SET (_VECSC<<5) OR (_WDTCTL<<4) OR (_SGTDIS<<3)
_CPC1 SET _CPC1 OR (_INTSCXT<<2) OR (_BP<<1) OR (_ZCJ)
MOV CPUCON1,#_CPC1
$IF (INIT_CPUCON2 = 1) ; Set CPUCON2 register
_CPC2 SET (_RETST<<3) OR (_FASTBL<<2) OR (_FASTPEC<<1) OR (_SL)
_CPC2 SET _CPC2 OR (_EIOIAEN<<7) OR (_STEN<<6) OR (_ZSC<<5) OR (_OVRUN<<4)
_CPC2 SET _CPC2 OR (_BYPPF<<9) OR (_BYPF<<8)
_CPC2 SET _CPC2 OR (_FIFODEPTH<<12) OR (_FIFOFED<<10)
MOV CPUCON2,#_CPC2
$ENDIF
$IF (INIT_SYSCON1 = 1) ; Set SYSCON1 register
_SYSC1 SET (_CPSYS<<8) OR (_PFCFG<<4) OR (_PDCFG<<2) OR (_SLEEPCON)
EXTR #01H ; Extended SFR access
MOV SYSCON1,#_SYSC1
$ENDIF
$IF (INIT_SYSCON3 = 1) ; Set SYSCON3 register
_SYSC3 SET ADCDIS OR (ASC0DIS << 1) OR (SSC0DIS << 2) OR (GPTDIS << 3)
_SYSC3 SET _SYSC3 OR (FMDIS << 5) OR (CC1DIS << 6) OR (CC2DIS << 7)
_SYSC3 SET _SYSC3 OR (CC6DIS << 8) OR (ASC1DIS << 10) OR (I2CDIS << 11)
_SYSC3 SET _SYSC3 OR (SDLMDIS << 12) OR (CANDIS << 13) OR (SSC1DIS<< 15)
EXTR #1
MOV SYSCON3,#_SYSC3
$ENDIF
$IF (CONFIG_EBC = 1) ; Set EBCMOD0 register
_EBC0 SET (_SLAVE<<9) OR (_ARBEN<<8) OR (_CSPEN<<4) OR (_SAPEN)
_EBC0 SET _EBC0 OR (_BYTDIS<<12) OR (_WRCFG<<11) OR (_EBCDIS<<10)
_EBC0 SET _EBC0 OR (_RDYPOL<<15) OR (_RDYDIS<<14) OR (_ALEDIS<<13)
MOV R0,#_EBC0
MOV EBCMOD0,R0
; Set EBCMOD1 register
_EBC1 SET (_DHPDIS<<6) OR (_APDIS)
MOV R0,#_EBC1
MOV EBCMOD1,R0
$ENDIF
$IF (CONFIG_CS0)
; Set TCONCS0 register
_TCS0 SET (_PHD0<<5) OR (_PHC0<<3) OR (_PHB0<<2) OR (_PHA0)
_TCS0 SET _TCS0 OR (_WRPHF0<<13) OR (_RDPHF0<<11) OR (_PHE0<<6)
MOV R0,#_TCS0
MOV TCONCS0,R0
; Set FCONCS0 register
_FCS0 SET (_BTYP0<<4) OR (_RDYMOD0<<2) OR (_RDYEN0<<1) OR (_ENCS0)
MOV R0,#_FCS0
MOV FCONCS0,R0
$ENDIF
$IF (CONFIG_CS1)
; Set TCONCS1 register
_TCS1 SET (_PHD1<<5) OR (_PHC1<<3) OR (_PHB1<<2) OR (_PHA1)
_TCS1 SET _TCS1 OR (_WRPHF1<<13) OR (_RDPHF1<<11) OR (_PHE1<<6)
MOV R0,#_TCS1
MOV TCONCS1,R0
; Set ADDRSEL1 register
CALC_ADDRSEL _ADDRSEL1, _ADDR1, _SIZE1
MOV R0,#_ADDRSEL1
MOV ADDRSEL1,R0
; Set FCONCS1 register
_FCS1 SET (_BTYP1<<4) OR (_RDYMOD1<<2) OR (_RDYEN1<<1) OR (_ENCS1)
MOV R0,#_FCS1
MOV FCONCS1,R0
$ENDIF
$IF (CONFIG_CS2)
; Set TCONCS2 register
_TCS2 SET (_PHD2<<5) OR (_PHC2<<3) OR (_PHB2<<2) OR (_PHA2)
_TCS2 SET _TCS2 OR (_WRPHF2<<13) OR (_RDPHF2<<11) OR (_PHE2<<6)
MOV R0,#_TCS2
MOV TCONCS2,R0
; Set ADDRSEL2 register
CALC_ADDRSEL _ADDRSEL2, _ADDR2, _SIZE2
MOV R0,#_ADDRSEL2
MOV ADDRSEL2,R0
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