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3 Commits

Author SHA1 Message Date
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