Subject: Re: [stella] 6502 guru's... From: "doppel" <gentlben@xxxxxxxxxxxx> Date: Sat, 15 Jul 2000 10:14:19 -0700 |
> 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? those were the datasheets for the 65C02, a CMOS version of the 6502. the BBR0-7 and BBS0-7 instructions are not supported on the original NMOS 6502, or on the 6507. sorry to disappoint you. doppel^_^ -- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
Current Thread |
---|
|
<- Previous | Index | Next -> |
---|---|---|
[stella] 6502 guru's..., Mark De Smet | Thread | [stella] News from the Blue Sky Ran, Piero Cavina |
[stella] News from the Blue Sky Ran, Piero Cavina | Date | Re: [stella] Con Man of: "The Core", Russ Perry Jr |
Month |