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eForth431-msp430g2553-naken.lst
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eForth431-msp430g2553-naken.lst
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
; This is a 430eForth assembler listing based on the original script from
; Dr. Chen Hanson Ting as described in his book: Zen and the Forth Language:
; EFORTH for the MSP430 from Texas Instruments (Kindle Edition). It was first
; written by him in IAR Assembler, then transferred to the CCS and now adapted
; by Michael Kalus for the naken_asm.
;
; MIT License
; ----------------------------------------------------------------------------
; Copyright (c) 2014 Dr. Chen-Hanson Ting CCS Version 430eForth4.3
; (c) 2018 Michael Kalus Naken Version 430eForth4.3n
; (c) 2018 Manfred Mahlow Flash Tools 430eForth4.3n1
;
; Permission is hereby granted, free of charge, to any person obtaining a copy
; of this software and associated documentation files (the "Software"), to deal
; in the Software without restriction, including without limitation the rights
; to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
; copies of the Software, and to permit persons to whom the Software is
;furnished to do so, subject to the following conditions:
;
; The above copyright notice and this permission notice shall be included in all
; copies or substantial portions of the Software.
;
; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
; SOFTWARE.
;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
; 7/7/2012 430eForth1.0, from eForth86.asm and 430uForth
; 7/4/2012 Move 430uForth2.1 from IAR to CCS 5.2
; 8/5/2014 Move 430eForth2.2 to CCS 6.0. Fix linkage of OVER.
; Software UART at 2400 baud.
; 8/10/2014 430eForth2.3 9600 baud, thanks to Dirk Bruehl and
; Michael Kalus of www.4e4th.org
; 8/10/2014 430eForth2.4 Restore ERASE and WRITE
; 8/20/2014 430eForth2.5 Test Segment D
; 8/25/2014 430eForth2.6 Turnkey
; 8/26/2014 430eForth2.7 Optimize
; 9/16/2014 430eForth3.1 Tail recursion, APP!
; 10/11/2014 430eForth4.1 Direct thread, more optimization
; 10/23/2014 430eForth4.2 Direct thread, pack lists
; 11/12/2014 430eForth4.2 Direct thread, final
;
; Build for and verified on MSP430G2 LaunchPad from TI
; Assembled with Code Composer Sudio 6.0 IDE
; Internal DCO at 8 MHz
; Hardware UART at 9600 baud. TXD and RXD must be crossed.
;CCS: ;ting
; .nolist
; .title "msp430 eForth 4.3"
; .cdecls C,LIST,"msp430g2553.h" ; Include device header file
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
; 05/13/2018 Moved 430eForth4.3 from CSS to Michael Kohn's naken_asm (ver.
; 23 april 2018) - ok ;mk
; 20180624 $," - bug fixed. Thanks to Manfred Mahlow. ;mk
; 20180628 DIGIT? : bug fix, 0= 0> were handled as numbers ;MM
; 20180629 FSCAN added, sets CP to the lowest free flash addr at BOOT time.
; FSCAN is executed before COLD executes QUIT.
; Version string changed in HI from 43n to 43n1. ;MM
; 20180630 ERASE and WRITE renamed to IERASE IWRITE due to name conflict ;MM
; 20180701 LITERAL and ALIGNED revealed. ;MM
; 20180707 Flash Test QFLASH ( a -- a ) added. Aborts with message ?flash
; if a > EDM. (EDM = End of Dictionary Memory space in the flash) ;MM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;naken: ;mk
.msp430
.include "msp430g2553.inc" ; MCU-specific register equates for naken_asm
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Direct Thread Model of eForth
; CCS: .equ ; naken: equ ;mk
;; CPU registers
tos equ R4
stack equ R5
ip equ R6
temp0 equ R7
temp1 equ R8
temp2 equ R9
temp3 equ R10
;; Macros
; CCS: <name> .macro ; naken: .macro <name> ;mk
.macro pops ;DROP
mov.w @stack+,tos
.endm
.macro pushs ;DUP
decd.w stack
mov.w tos,0(stack)
.endm;; Constants
.macro INEXT ;mk renamed (dollar)NEXT to INEXT - inline code for NEXT.
mov @ip+,pc ; fetch code address into PC
.endm
.macro INEST ;mk renamed (dollar)NEST to INEST - inline code for NEST.
.align 16 ; CCS: 2 bytes align ; naken: 16 bit align. mk
call #DOLST ; fetch code address into PC, W=PFA
.endm
.macro ICONST ;mk renamed (dollar)CONST to ICONST - inline code calling DOCON.
.align 16 ; CCS: 2 bytes align ; naken: 16 bit align. mk
call #DOCON ; fetch code address into PC, W=PFA
.endm
;; Assembler constants
COMPO equ 040H ;lexicon compile only bit
IMEDD equ 080H ;lexicon immediate bit
MASKK equ 07F1FH ;lexicon bit mask
CELLL equ 2 ;size of a cell
BASEE equ 10 ;default radix
VOCSS equ 8 ;depth of vocabulary stack
BKSPP equ 8 ;backspace
LF equ 10 ;line feed
CRR equ 13 ;carriage return
ERR equ 27 ;error escape
TIC equ 39 ;tick
CALLL equ 012B0H ;NOP CALL opcodes
UPP equ 200H
DPP equ 220H
SPP equ 378H ;data stack
TIBB equ 380H ;terminal input buffer
RPP equ 3F8H ;return stacl
CODEE equ 0C000H ;code dictionary
COLDD equ 0FFFEH ;cold start vector
EM equ 0FFFFH ;top of memory
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.list
;;;;
;; Main entry points and COLD start data
; .text ; CCS: Predefined Memory Segment Name : Main memory (flash or ROM)
.org 0C000H ; naken : MSP430G2553 main memory : C000-FFFF = 16KB flash ROM
; FFE0-FFFF = interrupt vectors
; .global main ; CCS: File Reference Directive
; unused in naken
main:
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Device dependent I/O
; ?KEY ( -- F | c T )
; Return input character.
.dw 0
.db 4,"?KEY",0
QKEY:
pushs
0xc008: 0x8325 sub.w #2, r5 cycles: 1
0xc00a: 0x4485 mov.w r4, 0(r5) cycles: 4
0xc00c: 0x0000
QKEY1:
BIT.B #UCA0RXIFG,&IFG2
0xc00e: 0xb3d2 bit.b #1, &0x0003 cycles: 4
0xc010: 0x0003
JZ FALSE ;return false flag
0xc012: 0x24c3 jeq 0xc19a (offset: 390) cycles: 2
MOV.B &UCA0RXBUF,tos ; read character into TOS
0xc014: 0x4254 mov.b &0x0066, r4 cycles: 3
0xc016: 0x0066
pushs
0xc018: 0x8325 sub.w #2, r5 cycles: 1
0xc01a: 0x4485 mov.w r4, 0(r5) cycles: 4
0xc01c: 0x0000
jmp TRUE
0xc01e: 0x3cbf jmp 0xc19e (offset: 382) cycles: 2
; KEY ( -- c )
; Return input character.
.dw QKEY-6
.db 3,"KEY"
KEY: ;mk naken needs colon after label.
pushs
0xc026: 0x8325 sub.w #2, r5 cycles: 1
0xc028: 0x4485 mov.w r4, 0(r5) cycles: 4
0xc02a: 0x0000
KEY1:
BIT.B #UCA0RXIFG,&IFG2
0xc02c: 0xb3d2 bit.b #1, &0x0003 cycles: 4
0xc02e: 0x0003
JZ KEY1
0xc030: 0x27fd jeq 0xc02c (offset: -6) cycles: 2
MOV.B &UCA0RXBUF,tos ; read character into TOS
0xc032: 0x4254 mov.b &0x0066, r4 cycles: 3
0xc034: 0x0066
INEXT
0xc036: 0x4630 mov.w @r6+, PC cycles: 3
; EMIT ( c -- )
; Send character c to the output device.
.dw KEY-4
.db 4,"EMIT",0
EMIT:
EMIT1:
BIT.B #UCA0TXIFG,&IFG2
0xc040: 0xb3e2 bit.b #2, &0x0003 cycles: 4
0xc042: 0x0003
JZ EMIT1
0xc044: 0x27fd jeq 0xc040 (offset: -6) cycles: 2
MOV.B tos,&UCA0TXBUF
0xc046: 0x44c2 mov.b r4, &0x0067 cycles: 4
0xc048: 0x0067
pops
0xc04a: 0x4534 mov.w @r5+, r4 cycles: 2
INEXT
0xc04c: 0x4630 mov.w @r6+, PC cycles: 3
; !IO ( -- )
; Initialize the serial I/O devices.
; .dw EMIT-6
; .db 3,"!IO"
STOIO:
; 8MHz
mov.b &CALBC1_8MHZ, &BCSCTL1 ; Set DCO
0xc04e: 0x42d2 mov.b &0x10fd, &0x0057 cycles: 6
0xc050: 0x10fd
0xc052: 0x0057
mov.b &CALDCO_8MHZ, &DCOCTL ; to 8 MHz.
0xc054: 0x42d2 mov.b &0x10fc, &0x0056 cycles: 6
0xc056: 0x10fc
0xc058: 0x0056
mov.b #006h, &P1SEL ; Use P1.1/P1.2 for USCI_A0
0xc05a: 0x40f2 mov.b #0x06, &0x0026 cycles: 5
0xc05c: 0x0006
0xc05e: 0x0026
mov.b #006h, &P1SEL2 ; Use P1.1/P1.2 for USCI_A0
0xc060: 0x40f2 mov.b #0x06, &0x0041 cycles: 5
0xc062: 0x0006
0xc064: 0x0041
; Configure UART (Koch)
bis.b #UCSSEL_2,&UCA0CTL1 ;db2 SMCLK
0xc066: 0xd0f2 bis.b #0x80, &0x0061 cycles: 5
0xc068: 0x0080
0xc06a: 0x0061
mov.b #65,&UCA0BR0 ;db3 8MHz 9600 Insgesamt &833 = $341
0xc06c: 0x40f2 mov.b #0x41, &0x0062 cycles: 5
0xc06e: 0x0041
0xc070: 0x0062
mov.b #3,&UCA0BR1 ;db4 8MHz 9600
0xc072: 0x40f2 mov.b #0x03, &0x0063 cycles: 5
0xc074: 0x0003
0xc076: 0x0063
mov.b #UCBRS_2,&UCA0MCTL ;db5 Modulation UCBRSx = 2
0xc078: 0x42e2 mov.b #4, &0x0064 cycles: 4
0xc07a: 0x0064
bic.b #UCSWRST,&UCA0CTL1 ;db6 **Initialize USCI
0xc07c: 0xc3d2 bic.b #1, &0x0061 cycles: 4
0xc07e: 0x0061
INEXT
0xc080: 0x4630 mov.w @r6+, PC cycles: 3
;called from COLD
;; The kernel
; doLIT ( -- w )
; Push an inline literal.
; .dw STOIO-4
; .db COMPO+5,"doLIT"
DOLIT:
pushs
0xc082: 0x8325 sub.w #2, r5 cycles: 1
0xc084: 0x4485 mov.w r4, 0(r5) cycles: 4
0xc086: 0x0000
mov @ip+,tos
0xc088: 0x4634 mov.w @r6+, r4 cycles: 2
INEXT
0xc08a: 0x4630 mov.w @r6+, PC cycles: 3
; doCON ( -- a )
; Run time routine for CONSTANT, VARIABLE and CREATE.
; .dw DOLIT-6
; .db COMPO+5,"doCON"
DOCON:
pushs
0xc08c: 0x8325 sub.w #2, r5 cycles: 1
0xc08e: 0x4485 mov.w r4, 0(r5) cycles: 4
0xc090: 0x0000
pop tos
0xc092: 0x4134 pop.w r4 -- mov.w @SP+, r4 cycles: 2
mov @tos,tos
0xc094: 0x4424 mov.w @r4, r4 cycles: 2
INEXT
0xc096: 0x4630 mov.w @r6+, PC cycles: 3
; doLIST ( -- )
; Process colon list..
; .dw EMIT-6
; .db 6,"doLIST",0
DOLST:
mov ip,temp0 ;exchange pointers
0xc098: 0x4607 mov.w r6, r7 cycles: 1
pop ip ;push return stack
0xc09a: 0x4136 pop.w r6 -- mov.w @SP+, r6 cycles: 2
push temp0 ;restore the pointers
0xc09c: 0x1207 push.w r7 cycles: 3
INEXT
0xc09e: 0x4630 mov.w @r6+, PC cycles: 3
; EXIT ( -- )
; Terminate a colon definition.
.dw EMIT-6
.db 4,"EXIT",0
EXIT:
mov @sp+,ip
0xc0a8: 0x4136 pop.w r6 -- mov.w @SP+, r6 cycles: 2
INEXT
0xc0aa: 0x4630 mov.w @r6+, PC cycles: 3
; EXECUTE ( ca -- )
; Execute the word at ca.
.dw EXIT-6
.db 7,"EXECUTE"
EXECU:
mov tos,temp0
0xc0b6: 0x4407 mov.w r4, r7 cycles: 1
pops
0xc0b8: 0x4534 mov.w @r5+, r4 cycles: 2
br temp0
0xc0ba: 0x4700 mov.w r7, PC cycles: 2
; @EXECUTE ( a -- )
; Execute vector stored in address a.
.dw EXECU-8
.db 8,"@EXECUTE",0
ATEXE:
mov @tos,temp0
0xc0c8: 0x4427 mov.w @r4, r7 cycles: 2
pops
0xc0ca: 0x4534 mov.w @r5+, r4 cycles: 2
br temp0
0xc0cc: 0x4700 mov.w r7, PC cycles: 2
; branch ( -- )
; Branch to an inline address.
; .dw ATEXE-10
; .db COMPO+6,"branch",0
BRAN:
mov @ip+,ip
0xc0ce: 0x4636 mov.w @r6+, r6 cycles: 2
INEXT
0xc0d0: 0x4630 mov.w @r6+, PC cycles: 3
; ?branch ( f -- )
; Branch if flag is zero.
; .dw BRAN-8
; .db COMPO+7,"?branch"
QBRAN:
tst tos
0xc0d2: 0x9304 cmp.w #0, r4 cycles: 1
pops
0xc0d4: 0x4534 mov.w @r5+, r4 cycles: 2
jz BRAN
0xc0d6: 0x27fb jeq 0xc0ce (offset: -10) cycles: 2
jmp SKIP
0xc0d8: 0x3c04 jmp 0xc0e2 (offset: 8) cycles: 2
; next ( -- )
; Run time code for the single index loop.
; : next ( -- ) \ hilevel model
; r> r> dup if 1 - >r @ >r exit then drop cell+ >r ;
; .dw QBRAB-8
; .db COMPO+4,"next",0
DONXT:
dec 0(sp) ;decrement index
0xc0da: 0x8391 sub.w #1, 0(SP) cycles: 4
0xc0dc: 0x0000
jge BRAN ;loop back
0xc0de: 0x37f7 jge 0xc0ce (offset: -18) cycles: 2
incd.w sp ;discard index
0xc0e0: 0x5321 add.w #2, SP cycles: 1
SKIP:
incd.w ip ;exit loop
0xc0e2: 0x5326 add.w #2, r6 cycles: 1
INEXT
0xc0e4: 0x4630 mov.w @r6+, PC cycles: 3
; ! ( w a -- )
; Pop the data stack to memory.
.dw ATEXE-10
.db 1,"!"
STORE:
mov.w @stack+,0(tos)
0xc0ea: 0x45b4 mov.w @r5+, 0(r4) cycles: 5
0xc0ec: 0x0000
pops
0xc0ee: 0x4534 mov.w @r5+, r4 cycles: 2
INEXT
0xc0f0: 0x4630 mov.w @r6+, PC cycles: 3
; @ ( a -- w )
; Push memory location to the data stack.
.dw STORE-2
.db 1,"@"
AT:
mov.w @tos,tos
0xc0f6: 0x4424 mov.w @r4, r4 cycles: 2
INEXT
0xc0f8: 0x4630 mov.w @r6+, PC cycles: 3
; C! ( c b -- )
; Pop the data stack to byte memory.
.dw AT-2
.db 2,"C!",0
CSTOR:
mov.b @stack+,0(tos)
0xc100: 0x45f4 mov.b @r5+, 0(r4) cycles: 5
0xc102: 0x0000
inc stack
0xc104: 0x5315 add.w #1, r5 cycles: 1
pops
0xc106: 0x4534 mov.w @r5+, r4 cycles: 2
INEXT
0xc108: 0x4630 mov.w @r6+, PC cycles: 3
; C@ ( b -- c )
; Push byte memory location to the data stack.
.dw CSTOR-4
.db 2,"C@",0
CAT:
mov.b @tos,tos
0xc110: 0x4464 mov.b @r4, r4 cycles: 2
INEXT
0xc112: 0x4630 mov.w @r6+, PC cycles: 3
; RP! ( -- )
; init return stack pointer.
; .dw CAT-4
; .db 3,"RP!"
RPSTO:
mov #RPP,SP ;init return stack
0xc114: 0x4031 mov.w #0x03f8, SP cycles: 2
0xc116: 0x03f8
INEXT
0xc118: 0x4630 mov.w @r6+, PC cycles: 3
; R> ( -- w )
; Pop the return stack to the data stack.
.dw CAT-4
.db 2,"R",3EH,0
RFROM:
pushs
0xc120: 0x8325 sub.w #2, r5 cycles: 1
0xc122: 0x4485 mov.w r4, 0(r5) cycles: 4
0xc124: 0x0000
pop tos
0xc126: 0x4134 pop.w r4 -- mov.w @SP+, r4 cycles: 2
INEXT
0xc128: 0x4630 mov.w @r6+, PC cycles: 3
; R@ ( -- w )
; Copy top of return stack to the data stack.
.dw RFROM-4
.db 2,"R@",0
RAT:
pushs
0xc130: 0x8325 sub.w #2, r5 cycles: 1
0xc132: 0x4485 mov.w r4, 0(r5) cycles: 4
0xc134: 0x0000
mov 0(sp),tos
0xc136: 0x4114 mov.w 0(SP), r4 cycles: 3
0xc138: 0x0000
INEXT
0xc13a: 0x4630 mov.w @r6+, PC cycles: 3
; >R ( w -- )
; Push the data stack to the return stack.
.dw RAT-4
.db COMPO+2,">R",0
TOR:
push tos
0xc142: 0x1204 push.w r4 cycles: 3
pops
0xc144: 0x4534 mov.w @r5+, r4 cycles: 2
INEXT
0xc146: 0x4630 mov.w @r6+, PC cycles: 3
; SP! ( -- )
; Init data stack pointer.
; .dw SPAT-4
; .db 3,"SP!"
SPSTO:
mov #SPP,stack ;init parameter stack
0xc148: 0x4035 mov.w #0x0378, r5 cycles: 2
0xc14a: 0x0378
clr tos
0xc14c: 0x4304 mov.w #0, r4 cycles: 1
INEXT
0xc14e: 0x4630 mov.w @r6+, PC cycles: 3
; DROP ( w -- )
; Discard top stack item.
.dw TOR-4
.db 4,"DROP",0
DROP:
pops
0xc158: 0x4534 mov.w @r5+, r4 cycles: 2
INEXT
0xc15a: 0x4630 mov.w @r6+, PC cycles: 3
; DUP ( w -- w w )
; Duplicate the top stack item.
.dw DROP-6
.db 3,"DUP"
DUPP:
pushs
0xc162: 0x8325 sub.w #2, r5 cycles: 1
0xc164: 0x4485 mov.w r4, 0(r5) cycles: 4
0xc166: 0x0000
INEXT
0xc168: 0x4630 mov.w @r6+, PC cycles: 3
; SWAP ( w1 w2 -- w2 w1 )
; Exchange top two stack items.
.dw DUPP-4
.db 4,"SWAP",0
SWAP:
mov.w tos,temp0
0xc172: 0x4407 mov.w r4, r7 cycles: 1
mov.w @stack,tos
0xc174: 0x4524 mov.w @r5, r4 cycles: 2
mov.w temp0,0(stack)
0xc176: 0x4785 mov.w r7, 0(r5) cycles: 4
0xc178: 0x0000
INEXT
0xc17a: 0x4630 mov.w @r6+, PC cycles: 3
; OVER ( w1 w2 -- w1 w2 w1 )
; Copy second stack item to top.
.dw SWAP-6
.db 4,"OVER",0
OVER:
mov.w @stack,temp0
0xc184: 0x4527 mov.w @r5, r7 cycles: 2
pushs
0xc186: 0x8325 sub.w #2, r5 cycles: 1
0xc188: 0x4485 mov.w r4, 0(r5) cycles: 4
0xc18a: 0x0000
mov.w temp0,tos
0xc18c: 0x4704 mov.w r7, r4 cycles: 1
INEXT
0xc18e: 0x4630 mov.w @r6+, PC cycles: 3
; 0< ( n -- t )
; Return true if n is negative.
.dw OVER-6
.db 2,"0",3CH,0
ZLESS:
tst tos
0xc196: 0x9304 cmp.w #0, r4 cycles: 1
jn TRUE
0xc198: 0x3002 jn 0xc19e (offset: 4) cycles: 2
FALSE:
clr tos
0xc19a: 0x4304 mov.w #0, r4 cycles: 1
INEXT
0xc19c: 0x4630 mov.w @r6+, PC cycles: 3
TRUE:
mov #0x-1,tos
0xc19e: 0x4334 mov.w #-1, r4 cycles: 1
INEXT
0xc1a0: 0x4630 mov.w @r6+, PC cycles: 3
; AND ( w w -- w )
; Bitwise AND.
.dw ZLESS-4
.db 3,"AND"
ANDD:
and @stack+,tos
0xc1a8: 0xf534 and.w @r5+, r4 cycles: 2
INEXT
0xc1aa: 0x4630 mov.w @r6+, PC cycles: 3
; OR ( w w -- w )
; Bitwise inclusive OR.
.dw ANDD-4
.db 2,"OR",0
ORR:
bis @stack+,tos
0xc1b2: 0xd534 bis.w @r5+, r4 cycles: 2
INEXT
0xc1b4: 0x4630 mov.w @r6+, PC cycles: 3
; XOR ( w w -- w )
; Bitwise exclusive OR.
.dw ORR-4
.db 3,"XOR"
XORR:
xor @stack+,tos
0xc1bc: 0xe534 xor.w @r5+, r4 cycles: 2
INEXT
0xc1be: 0x4630 mov.w @r6+, PC cycles: 3
; UM+ ( w w -- w cy )
; Add two numbers, return the sum and carry flag.
.dw XORR-4
.db 3,"UM+"
UPLUS:
add @stack,tos
0xc1c6: 0x5524 add.w @r5, r4 cycles: 2
mov tos,0(stack)
0xc1c8: 0x4485 mov.w r4, 0(r5) cycles: 4
0xc1ca: 0x0000
clr tos
0xc1cc: 0x4304 mov.w #0, r4 cycles: 1
rlc tos
0xc1ce: 0x6404 addc.w r4, r4 cycles: 1
INEXT
0xc1d0: 0x4630 mov.w @r6+, PC cycles: 3
;; Common functions
; ?DUP ( w -- w w | 0 )
; Dup tos if its is not zero.
.dw UPLUS-4
.db 4,"?DUP",0
QDUP:
tst tos
0xc1da: 0x9304 cmp.w #0, r4 cycles: 1
jnz DUPP
0xc1dc: 0x23c2 jne 0xc162 (offset: -124) cycles: 2
INEXT
0xc1de: 0x4630 mov.w @r6+, PC cycles: 3
; ROT ( w1 w2 w3 -- w2 w3 w1 )
; Rot 3rd item to top.
.dw QDUP-6
.db 3,"ROT"
ROT:
mov.w 0(stack),temp0
0xc1e6: 0x4517 mov.w 0(r5), r7 cycles: 3
0xc1e8: 0x0000
mov.w tos,0(stack)
0xc1ea: 0x4485 mov.w r4, 0(r5) cycles: 4
0xc1ec: 0x0000
mov.w 2(stack),tos
0xc1ee: 0x4514 mov.w 2(r5), r4 cycles: 3
0xc1f0: 0x0002
mov.w temp0,2(stack)
0xc1f2: 0x4785 mov.w r7, 2(r5) cycles: 4
0xc1f4: 0x0002
INEXT
0xc1f6: 0x4630 mov.w @r6+, PC cycles: 3
; 2DROP ( w w -- )
; Discard two items on stack.
.dw ROT-4
.db 5,"2DROP"
DDROP:
incd.w stack
0xc200: 0x5325 add.w #2, r5 cycles: 1
pops
0xc202: 0x4534 mov.w @r5+, r4 cycles: 2
INEXT
0xc204: 0x4630 mov.w @r6+, PC cycles: 3
; 2DUP ( w1 w2 -- w1 w2 w1 w2 )
; Duplicate top two items.
.dw DDROP-6
.db 4,"2DUP",0
DDUP:
mov.w @stack,temp0
0xc20e: 0x4527 mov.w @r5, r7 cycles: 2
pushs
0xc210: 0x8325 sub.w #2, r5 cycles: 1
0xc212: 0x4485 mov.w r4, 0(r5) cycles: 4
0xc214: 0x0000
decd.w stack
0xc216: 0x8325 sub.w #2, r5 cycles: 1
mov.w temp0,0(stack)
0xc218: 0x4785 mov.w r7, 0(r5) cycles: 4
0xc21a: 0x0000
INEXT
0xc21c: 0x4630 mov.w @r6+, PC cycles: 3
; + ( w w -- sum )
; Add top two items.
.dw DDUP-6
.db 1,"+"
PLUS:
add @stack+,tos
0xc222: 0x5534 add.w @r5+, r4 cycles: 2
INEXT
0xc224: 0x4630 mov.w @r6+, PC cycles: 3
; D+ ( d d -- d )
; Double addition, as an example using UM+.
;
.dw PLUS-2
.db 2,"D+",0
DPLUS:
mov.w @stack+,temp0
0xc22c: 0x4537 mov.w @r5+, r7 cycles: 2
mov.w @stack+,temp1
0xc22e: 0x4538 mov.w @r5+, r8 cycles: 2
add.w temp0,0(stack)
0xc230: 0x5785 add.w r7, 0(r5) cycles: 4
0xc232: 0x0000
addc temp1,tos
0xc234: 0x6804 addc.w r8, r4 cycles: 1