On Mon, Jul 20, 2015 at 12:04 AM, N0body H0me wrote:
> Anyways, just trying to be helpful.
I appreciate that. I wasn't criticizing, just explaining a few reasons
why I prefer not to use an actual 8289 in my design.
Thanks!
Eric
> -Original Message-
> From: space...@gmail.com
> Sent: Sun, 19 Jul 2015 21:14:45 -0600
> To: cctalk@classiccmp.org
> Subject: Re: Multibus arbiter design
>
> On Sun, Jul 19, 2015 at 4:01 PM, N0body H0me
> wrote:
>> A quick search on the "Site Which M
On Sun, Jul 19, 2015 at 4:01 PM, N0body H0me wrote:
> A quick search on the "Site Which Must Not Be Named" shows
> some NOS 8289's for about $7 each, including postage. I dunno,
> just sayin-- why re-invent the wheel?
1. The 8289, being bipolar, draws an absurd amount of current on +5V.
Well ov
> -Original Message-
> From: space...@gmail.com
> Sent: Sun, 19 Jul 2015 13:15:37 -0600
> To: cctalk@classiccmp.org
> Subject: Re: Multibus arbiter design
>
> On Sun, Jul 19, 2015 at 9:21 AM, Al Kossow wrote:
>> SUN I or II board?
>
> Cool, the Sun 2
On Sun, Jul 19, 2015 at 9:21 AM, Al Kossow wrote:
> SUN I or II board?
Cool, the Sun 2 CPU board doc has description and schematic.
SUN I or II board?
On 7/18/15 10:50 PM, Eric Smith wrote:
Is anyone aware of any published detailed designs of Multibus
arbitration circuitry
/or PALs, but I haven't found any
schematics. The only thing I've found so far is an application note "A
Multibus Arbiter Design for 10 MHz Processors" in the 1988 AMD PAL
Device Handbook, but I'd like to see other examples.
I'm considering designing a Multibus I
