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Add "DUMP" word

This commit is contained in:
Virgil Dupras 2020-04-05 13:53:03 -04:00
parent 7df7416e9e
commit 7b34268a9a
2 changed files with 34 additions and 0 deletions

View File

@ -199,6 +199,9 @@ core.
." xxx" -- *I* Compiles string literal xxx followed by a call
to (print)
C< -- c Read one char from buffered input.
DUMP n a -- Prints n bytes at addr a in a hexdump format.
Prints in chunks of 8 bytes. Doesn't do partial
lines. Output is designed to fit in 32 columns.
EMIT c -- Spit char c to output stream
IN> -- a Address of variable containing current pos in input
buffer.

View File

@ -42,3 +42,34 @@
256 /MOD ( l h )
.x .x
;
( a -- a+8 )
: _
DUP ( save for 2nd loop )
':' EMIT DUP .x SPC
4 0 DO
DUP @
256 /MOD SWAP
.x .x
SPC
2 +
LOOP
DROP
8 0 DO
DUP C@
DUP 0x20 < IF DROP '.' THEN
DUP 0x7e > IF DROP '.' THEN
EMIT
1 +
LOOP
LF
;
( n a -- )
: DUMP
LF
BEGIN
OVER 1 < IF DROP EXIT THEN
_
SWAP 8 - SWAP
AGAIN
;