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More tweaking on forth

This commit is contained in:
Jeremiah Orians 2016-10-30 21:58:41 -04:00
parent 42e0191be3
commit b14c5e73af
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GPG Key ID: 7457821534D2ACCD
2 changed files with 11 additions and 6 deletions
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3
User_Interface.py
View File

@ -22,6 +22,8 @@ def Reset_lilith():
def Step_lilith():
global Current_IP
Current_IP = vm.step_lilith()
global Count
Count = Count + 1
return
def Set_Memory(address, value):
@ -172,4 +174,5 @@ def get_footer():
Current_IP = 0
Current_Page = 0
Watchpoints = {0}
Count=0
Reset_lilith()

14
stage2/forth.s
View File

@ -35,9 +35,9 @@
LOADUI R11 $NEXT ; Get Address of Next
FALSE R10 ; Current state is Interpreting
LOADUI R9 $CR_Entry ; Get Address of last defined function
# LOADUI R8 $HEAP ; Get Address of HEAP
# LOADUI R0 0x1100 ; Need number to engage tape_01
# FOPEN_READ ; Load Tape_01 for Reading
LOADUI R8 $HEAP ; Get Address of HEAP
LOADUI R0 0x1100 ; Need number to engage tape_01
FOPEN_READ ; Load Tape_01 for Reading
MOVE R7 R0 ; Make Tape_01 Default IO
LOADUI R13 $Quit_Code ; Intialize via QUIT
JSR_COROUTINE R11 ; NEXT
@ -60,16 +60,17 @@
;; Jumps to updated current
;; Affects only Next and current
:NEXT
LOAD R12 R13 0 ; Get Address stored which is pointed at by next
COPY R12 R13 ; Preserve Current Pointer
LOAD R0 R13 0 ; Get Address stored which is pointed at by next
ADDUI R13 R13 4 ; Increment Next
JSR_COROUTINE R12 ; Jump to next thing
JSR_COROUTINE R0 ; Jump to next thing
;; DOCOL Function
;; The Interpreter for DO COLON
;; Jumps to NEXT
:DOCOL
PUSHR R13 R15 ; Push NEXT onto Return Stack
ADDUI R13 R13 4 ; Update NEXT to point to the instruction after itself
ADDUI R13 R12 4 ; Update NEXT to point to the instruction after itself
JUMP @NEXT ; Use NEXT
;; Some Forth primatives
@ -717,6 +718,7 @@
CMPSKIP.LE R15 R1 ; While Return stack isn't empty
JUMP @Clear_Return ; Keep looping to clear it out
:RETURN_Done
MOVE R15 R1 ; Ensure underflow is corrected
JSR_COROUTINE R11 ; NEXT
;; Parameter stack operations