1
0
mirror of https://github.com/fadden/6502bench.git synced 2024-07-31 07:29:00 +00:00
Commit Graph

107 Commits

Author SHA1 Message Date
Andy McFadden
2f74fce80b Expand set of things that work with double-click on opcode
If you double-click on the opcode of "JSR label", the code view
selection jumps to the label.  This now works for partial operands,
e.g. "LDA #<label".

Some changes to the find-label-offset code affected the cc65 "is it
a forward reference to a direct-page label" logic.  The regression
test now correctly identifies an instruction that refers to itself
as not being a forward reference.
2018-11-03 15:03:25 -07:00
Andy McFadden
b37d3dba02 Expand reach of external symbol nearby-target test
If PTR is defined as an external symbol, we were automatically
symbol-ifying PTR+1.  Now we also symbolify PTR+2.  This helps with
24-bit pointers on the 65816, and 16-bit "jump vectors", where the
address is preceded by a JMP opcode.

Removed the "AMPERV_" symbol I added to make the tutorial look
right.
2018-10-08 13:15:16 -07:00
Andy McFadden
3c4e6cfe7a Another swing at first-word-is-load-addr
If we set the length word to assemble at address zero, the rest of
the code will try to use it as a zero-page label, so don't do that.
Instead, we use the start address, creating an overlapping region.
Easy enough to edit if that's undesirable.

(issue #23)
2018-10-05 20:55:05 -07:00
Andy McFadden
440eec2396 Use two .ORGs for first-word-is-load-addr
First is always at zero, second is at the address.  This puts an
ORG directive right at the start of the code, and avoids potentially
assembler-specific wrap-around behavior when the desired load
address is $0000 or $0001.

(issue #23)
2018-10-05 17:25:41 -07:00
Andy McFadden
92add74fc3 Add first-word-is-load-addr parameter to system definitions
If set, the first word of the file is used to set the load address.
The initial code entry hint is placed at offset +000002 instead of
the start of the file.

Set it to true for the C64 system definition.

(issue #23)
2018-10-05 15:39:44 -07:00
Andy McFadden
4639af8b0e Strip single-byte format items on single-byte instructions
It's possible to have format descriptors on instructions that are
left over from when the bytes were treated as data.  Single-byte
formats were being allowed on single-byte instructions, which
confused things later when the code tried to apply the format to
an instruction with no operand.
2018-10-05 11:10:03 -07:00
Andy McFadden
2c6212404d Initial file commit 2018-09-28 10:05:11 -07:00