Commit 02ca84eb authored by bp's avatar bp
Browse files

Further simulator enhancements 


git-svn-id: https://www.forth-ev.de/repos/b16@221 3b8d8251-53f3-0310-8f3b-fd1cb8370982
parent 3e47659b

b16.fs

+8 −6
Original line number Diff line number Diff line
@@ -27,6 +27,8 @@ 
Variable Inst

Variable P

Variable A

0 Value T

0 Value N

Variable c

Variable sp  here &10 cells dup allot erase  2 sp !

Variable rp  here   8 cells dup allot erase
@@ -43,12 +45,12 @@ $10000 allocate throw Value RAM RAM $10000 erase 


\ Stack access



: T ( -- n )  sp @ 1+ cells sp + @ ;

: 3rd ( -- n )  sp @ 1+ cells sp + @ ;

: R ( -- n )  rp @ 1+ cells rp + @ ;

: ?sp ( -- )  sp @ &10 u> abort" Stack wrap" ;

: ?sp ( -- )  sp @ 7 and sp ! ;

: ?rp ( -- )  rp @ 8 u> abort" Rstack wrap" ;

: pop ( -- n )  T  -1 sp +! ?sp ;

: push ( n -- ) 1 sp +! ?sp sp @ 1+ cells sp + ! ;

: pop ( -- n )  T  N to T  3rd to N  -1 sp +! ?sp ;

: push ( n -- ) 1 sp +! ?sp  N sp @ 1+ cells sp + !  T to N  to T ;

: rpop ( -- n )  R  -1 rp +! ?rp ;

: rpush ( n -- ) 1 rp +! ?rp rp @ 1+ cells rp + ! ;
@@ -331,8 +333,8 @@ b16-asm also Forth 
    IP @ >r prog r@ RAM + IP @ r@ - r> program ;

: eval ( >defs -- )

    IP @ >r comp r@ exec r> org &20 wait ?in ;

: sim  ( >defs -- )

    IP @ >r prog r@ P ! ['] run catch r> org ;

: sim  ( >defs -- )  rp off

    IP @ >r prog r@ P ! ['] run catch r> org throw ;



: asm-load ( -- )  b16-asm definitions include forth definitions ;