On 1/23/2023 12:11 PM, Jim Brain via cctalk wrote:
On 1/23/2023 11:53 AM, Mike Katz via cctalk wrote:
The 6883 SAM was the "glue" that provided all of the timing and
address decoding for the entire system. To reduce flicker the 6847
and 6809E memory accesses were alternate cycled. This me
On 1/23/2023 1:21 PM, Mike Katz wrote:
On 1/23/2023 12:11 PM, Jim Brain via cctalk wrote:
On 1/23/2023 11:53 AM, Mike Katz via cctalk wrote:
The 6883 SAM was the "glue" that provided all of the timing and
address decoding for the entire system. To reduce flicker the 6847
and 6809E memory
There is surprisingly little interest in Techtronics gear despite the coolness
factor. As for the Intel MFS? System, which is Multibus? I have a whole crate
of mb cards on the way so FUGGEDABOUTIT :)
When I was shopping for my first computer, I looked at the CoCo. In reality
anything TRS-80 re
OS/9 is a multi users, multitasking operating system.
There are many applications and video games and many programming
languages available for the 6809 (C, Basic, Basic09, Forth, Assembler,
Lisp, etc).
On 1/23/2023 12:49 PM, Marvin Johnston via cctalk wrote:
As to what can you do with it? A
As to what can you do with it? A local company was running a homemade NC
drill using the (IIRC) Coco 2 with a pair of disk drives to drive the
thing. I bought it for kicks, but never used it.
To ask another similar question, I have a tektronix 2 axis controller
that uses paper tape. Changing
On 1/23/2023 11:53 AM, Mike Katz via cctalk wrote:
The 6883 SAM was the "glue" that provided all of the timing and
address decoding for the entire system. To reduce flicker the 6847
and 6809E memory accesses were alternate cycled. This means that they
used opposite edges of the Phase 1 cloc
The original coco had an MC6809E processor (a slight variation of the
MC6809 processor), a MC6883 Synchronous Address Multiplexer and a MC6847
Graphics Chip.
The 6883 SAM was the "glue" that provided all of the timing and address
decoding for the entire system. To reduce flicker the 6847 and
I never knew there was a 6847. The 6545 used in the TI Pro is compatible to
whatever degree with the 6845 despite producing 100 more lines of revolution.
The 6847 not so.
On 1/23/2023 11:22 AM, Chris via cctalk wrote:
I don't even remember signing up for the RetroAbout64K mailing list. I haven't
seen any actual dicussion in my remembrance. But I do get once or twice a week
an email about COCO Nation or some such. Sounds like a hot chocolate
enthusiasts group se
