[Coco] Sneak peek

[Roger Taylor]

Mark,
I just dropped the Data Center's 6551 replacement in my pak and it's 
not working correctly from my initial tests using the stock RS-232 
Pak's ROM software.  I was just using the same setup with the 
Rockwell 6551 in the socket, no problems.  I restarted HyperTerminal 
and opened the connection again as usual.  I'm getting periodic 
freezes on the CoCo, and junk received on the PC.  The CoCo doesn't 
receive anything typed from the CoCo.  I'll look into this matter 
more but I'm also going to contact those guys and ask more about the 
chip if nothing improves.




At 08:24 PM 2/14/2009, you wrote:

>That I do not know. You will also enjoy interfacing into all of the 
>different USB com ports etc....
>
>
>----- Original Message -----
>From: "Roger Taylor" <operator at coco3.com>
>To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
>Sent: Saturday, February 14, 2009 7:35:01 PM GMT -06:00 US/Canada Central
>Subject: Re: [Coco] Sneak peek
>
>
>At 04:51 PM 2/14/2009, you wrote:
> >Roger,
> >
> >Didn't mean to hit a nerve. You did ask the public to design and
> >build a while back and had some offers.
> >That is all.
> >No need to over explain.......
> >:) Back at ya!
> >Regards,
> >Mark
>
>
>It didn't quite work that way, though.  :)
>
>
>
>Btw, getting back to quality chit-chat here... :)  while it's on my
>mind, I'm looking at that 6551 replacement chip I mentioned a few
>weeks ago here and was wondering if it has improvements over the
>Rockwell 6551 that you are aware of.  I've got 2 of these now that
>I'm about to try in my pak but just typing back and forth won't prove
>much.  If by chance it has a bigger FIFO it would be nice but the
>price of these chips I think is over twice the cost of the Rockwell
>chips I've obtained.  I'm trying to keep the pak cost as low as
>possible but then everything is socketed, so anyone would have the
>option of customizing the boogers to their liking, even preset
>jumpers for 6551 tastes.
>
>here's the 6551 replacment chip page
>http://www.westerndesigncenter.com/wdc/w65c51s-chip.cfm
>
>Features of the W65C51S
>     * Full duplex operation with buffered receiver and transmitter
>     * Data set/modem control functions
>     * Internal baud rate generator with 15 programmable baud rates
>(50 to 19,200)
>     * Program selectable internally or externally controlled receiver rate
>     * Programmable word lengths, number of stop bits and parity bit
>generation and detection
>     * Programmable interrupt control
>     * Program reset
>     * Program selectable serial echo mode
>     * 2 Chip Selects
>     * 14 MHz Operating Bus Speed
>     * 5V Power Supply
>     * Full TTL compatibility
>     * Bus compatible with 14 MHz W65C02S and W65C816S
>     * Bus Compatible with 65xx and 68xx microprocessors
>     * Replacement for CMD / GTE Harris / MOS Technology / GE / RCA /
>Synertek / Motorola / Freescale / Rockwell R6551, 65SC51, 65C51,
>6551, CPD65C51, 6551, 6850
>
>--
>Roger Taylor
>
>http://www.wordofthedayonline.com
>
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>
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-- 
Roger Taylor

http://www.wordofthedayonline.com