Merge remote-tracking branch 'refs/remotes/origin/main'

README.md

@@ -97,25 +97,27 @@ The command line has full searchable command history.
  - up arrow scrolls to previous
  - etc...
 
-# load_code (load)
+pressing enter will repeat the last line
+
+### load_code (load)
 
 loads a binary file that was output by ld65 for sim65. It expects to see the sim65 headers
 
 `>> load <file name>`
 
-# symbols (ll)
+### symbols (ll)
 
 loads symbol file output by ld65 for VICE. Generated by ld65 switches `-g -Ln <file>`
 
 `>> ll <file name>`
 
 you dont need to load symbols but its much easier with symbols
 
-# run
+### run
 
 runs the code starting at the address found in the binary file header
 
-# break (b)
+### break (b)
 
 Sets a breakpoint
 
@@ -124,13 +126,14 @@ Sets a breakpoint
 Examples
 
 `>> b ._main`
+
 `>> b $27ba`
 
-# bl
+### bl
 
 List break points
 
-# bd
+### bd
 
 delete break points
 
@@ -142,25 +145,25 @@ deletes all break points
 
 deletes break point #1 (from bl output)
 
-# go
+### go
 
 resumes execution after break point
 
-# next 
+### next 
 
 is 'step over' if it sees a function call it will not break until it returns
 
-# step
+### step
 
 one instruction
 
-# fin
+### fin
 
 run until return from current function call. 
 
-# watch (w)
+### watch (w)
 
-watch for memory read or write. Will breaak on the read of write of a location
+watch for memory read or write. Will break on the read or write of a location
 
 `>> w -r -w <addr>`
 
@@ -172,21 +175,21 @@ will break when a write it made to .sreg
 
 wl and wd are the same as bl and bd
 
-# memory (m)
+### memory (m)
 
 dumps memory
 
 `>> m $1467`
 
-# dis 
+### dis 
 
 Disassembles
 
 `>> dis [addr]`
 
 if no address is given it continues from the last address
 
-# enable (en)
+### enable (en)
 
 Enables bug traps.
 
@@ -196,37 +199,43 @@ memory check will break if a read is made from a memory location that has not be
 
 These are both turned off by default
 
-# printf (p)
+### print (p)
 
 prints values from memory
 
 `>> p -s -i -p <addr>`
 
 Print either an integer (16 bit), a string or a pointer
 
-# back_trace (bt) 
+### back_trace (bt) 
 
 Displays the current 6502 stack
 
-# expr
+### expr
 
 Expression evaluator. Anywhere that an address can be given you can have an expression
 
-The expr command evaluates an express, this can be useful for instecting thingss or just checking expression syntax
+The expr command evaluates an expression, this can be useful for inspecting things or just checking expression syntax
 
-an expression starts with '='. YOu can then have numbers, symbols, parantheses, registers, plus deference operations
+An expression starts with '='. You can then have numbers, symbols, parantheses, registers, plus dereference operations
 
  - `=xr` returns the x register
  - `=.ptr1+0x20` returns that symbol plus 0x20
  - `=@(.ptr1)` returns what ptr1 points at
  - `=@ @(.ptr1)` returns what the ptr1 at ptr1 points to
  - `=@(.ptr1+xr)` returns what ptr1 + xr points to
 
+`@` is the dereference operation for a word
+
+`@b` is the deref of a byte
+
+
  Useful quickies
 
  `dis =pc`
  `expr =xr`
-
 
-# quit
+ Note that you may need to enclose the whole expression in quotes so that it doesnt look like command arguments to the line parser
+
+### quit