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authorDimitri Sokolyuk <demon@dim13.org>2017-08-19 12:15:28 +0200
committerDimitri Sokolyuk <demon@dim13.org>2017-08-19 12:15:28 +0200
commit67d25d837ac55f28a366c0a3b262e439a6e75fc3 (patch)
treedf7715c7724c5935ab87c807f3b8b4ef529315e3 /amforth-6.5/msp430/devices/msp430fr5969/words/cold.asm
parente0d6784e89dba33226c0edb815bb974486fa7c48 (diff)
Add AmForth
Diffstat (limited to 'amforth-6.5/msp430/devices/msp430fr5969/words/cold.asm')
-rw-r--r--amforth-6.5/msp430/devices/msp430fr5969/words/cold.asm30
1 files changed, 30 insertions, 0 deletions
diff --git a/amforth-6.5/msp430/devices/msp430fr5969/words/cold.asm b/amforth-6.5/msp430/devices/msp430fr5969/words/cold.asm
new file mode 100644
index 0000000..6abf0ba
--- /dev/null
+++ b/amforth-6.5/msp430/devices/msp430fr5969/words/cold.asm
@@ -0,0 +1,30 @@
+CODEHEADER(XT_COLD,4,"cold")
+main: ; Debugger requires the 'main' symbol.
+reset:
+ mov #5A80h, &WDTCTL ; Watchdog off
+
+ mov #0A500h, &MPUCTL0 ; Write password to enable access to MPU
+ mov FLASHSTART>>4, &MPUSEGB1 ; B1 = Start of memory
+ mov AMFORTH_START>>4, &MPUSEGB2 ; B2 = 0x10000 (Segment 3 is upper mem)
+ mov #7577h, &MPUSAM ; write protect core system.
+ mov #0A501h, &MPUCTL0 ; Enable MPU
+ mov.b #0, &MPUCTL0+1 ; Disable MPU access
+
+ ;------------------------------------------------------------------------------
+ ; Init Clock
+
+ mov #0A500h, &CSCTL0 ; Enable access to clock registers
+ mov #0, &CSCTL3 ; Set all clock dividers to /1
+ mov.b #0, &CSCTL0+1 ; Disable access to clock registers
+
+
+ ;------------------------------------------------------------------------------
+ ; Forth registers
+ MOV #RSTACK,SP ; set up stack
+ MOV #PSTACK,PSP
+ MOV #UAREA,UP ; initial user pointer
+
+ CLR R15
+ ; now hand over to Forth with WARM (a colon word)
+ MOV #XT_WARM+2,IP
+ NEXT