[stella] 6502 guru's...

Subject: [stella] 6502 guru's...
From: Mark De Smet <de-smet@xxxxxxxxxxxxxxx>
Date: Wed, 12 Jul 2000 21:44:59 -0500 (CDT)
I was looking at some datasheets for the more recent versions of the 6502,
and noticed a few neumonics I hadn't seen before. BBR0-7 and
BBS0-7.  They are branch on bit 0(-7) reset, or bit 0(-7) set.  The
datasheet makes note of the instructions that are new from the original
6502, but these are not marked as such.(they are opcodes 0F-FF)

Does anyone know if these are supported in the 6507(original 6502)?  Does
anyone have the datasheet for the original 6502?

Mark


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  • [stella] 6502 guru's...
    • Mark De Smet - Wed, 12 Jul 2000 22:45:03 -0400 (EDT) <=
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