Re: Hardware emulation of 6509 using 6502?

From: smf <smf_at_null.net>
Date: Wed, 7 Mar 2018 16:20:11 +0000
Message-ID: <9473c454-a50a-f464-6d01-38fcfc5a2919@null.net>
I don't think anyone would have planned a 64k or 128k static ram 
machine, the documentation is either wrong or just refers to what they 
were using while waiting for working dynamic ram.

Commodore had issues with micron, wasn't there a lawsuit?


On 07/03/2018 01:18, Steve Gray wrote:
> The Max Machine uses a 6566 VIC-II chip (which uses SRAM rather than DRAM). Early documentation of the CBM-II series (source code) also mentions use of the 6566. However, released machines use the 6567, which leads me to believe that both were developed at almost the same time. The CBM-II series and the C64 are also very close, and were announced at the same time, unfortunately delays in the CBM-II line release make it seem much later.
> In my B-Series prototype: Commodore CBM-II B-Series Prototype Computer, which so far is the earliest known CBM-II machine, the 6509 CPU is dated 2282 (22nd week of 1982), the SID is 1382, and the 6526 is 0882
> Steve

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Received on 2018-03-07 18:03:26

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