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path: root/amforth-6.5/avr8/words/sp0.asm
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Diffstat (limited to 'amforth-6.5/avr8/words/sp0.asm')
-rw-r--r--amforth-6.5/avr8/words/sp0.asm27
1 files changed, 27 insertions, 0 deletions
diff --git a/amforth-6.5/avr8/words/sp0.asm b/amforth-6.5/avr8/words/sp0.asm
new file mode 100644
index 0000000..324c1cf
--- /dev/null
+++ b/amforth-6.5/avr8/words/sp0.asm
@@ -0,0 +1,27 @@
+; ( -- addr)
+; Stack
+; start address of the data stack
+VE_SP0:
+ .dw $ff03
+ .db "sp0",0
+ .dw VE_HEAD
+ .set VE_HEAD = VE_SP0
+XT_SP0:
+ .dw PFA_DOVALUE1
+PFA_SP0:
+ .dw USER_SP0
+ .dw XT_UDEFERFETCH
+ .dw XT_UDEFERSTORE
+
+; ( -- addr)
+; Stack
+; address of user variable to store top-of-stack for inactive tasks
+VE_SP:
+ .dw $ff02
+ .db "sp"
+ .dw VE_HEAD
+ .set VE_HEAD = VE_SP
+XT_SP:
+ .dw PFA_DOUSER
+PFA_SP:
+ .dw USER_SP