19 Jun
2008
19 Jun
'08
4:19 a.m.
Subject: Re: non-CP/M Z80 board
From: Dave McGuire <mcguire at neurotica.com>
Date: Wed, 18 Jun 2008 23:13:54 -0400
To: "General Discussion: On-Topic Posts Only" <cctech at
classiccmp.org>
On Jun 18, 2008, at 11:48 AM, Chuck Guzis wrote:
I've got a dozen or so 8755s, two or three 8155s, and no 8355s.
Not tube quantities, unfortunately.
-Dave
I do. Several tubes of 8755A, 8155A, 8156A and 8085A and some A-5s.
Those parts are not that uncommon and they did have multiple vendors.
Most of the Z80 (2.5 ->8MHZ) and peripherals are available from
many vendors including JDRmicrodevices. Not all the peripherals
were availble to 8mhz though (DMA was never made faster than 4mhz
if memory serves).
Allison
They're all over the place. I have at least one tube of *brand
new* NMOS Z80 (not-A) chips here...cost me all of three bucks on eBay
in '06 or so. Need any?
I think the chips under discussion were the 8085 specialty chips,
8155, 8355, 8755, etc. Got tubes of those? --
Dave McGuire
Port Charlotte, FL