VT101 8085 CPU Fault

[Mike Stein]

FYI, the 24 to 28 pin adapters I mentioned previously have selectable 
polarity chip selects:

http://store.go4retro.com/23xx-adapter/

----- Original Message ----- 
From: "Pete Turnbull" <pete at dunnington.plus.com>
To: <General at classiccmp.org>; "Discussion at classiccmp.org:On-Topic and 
Off-Topic Posts" <cctalk at classiccmp.org>
Sent: Friday, January 23, 2015 9:53 PM
Subject: Re: VT101 8085 CPU Fault


> On 24/01/2015 00:52, Johnny Billquist wrote:
>> On 2015-01-24 01:29, Robert Jarratt wrote:
>>> 1. Given the ROM is marked: CN55004N 8232, DEC TP03, 23-028E4-00, and
>>> it is 24-pin, is MCM68766 really the right choice?
>
> As close as you'll get in an EPROM, modulo chip select polarities. Someone 
> on the list promised me a few some years ago, but I never got them :-(
>
>>> 3. Does anyone have a ROM image for the VT101?
>
> I don't, sorry, but if anyone get an image dumped, I'll host it alongside 
> the others on my website.
>
>> Given it's "8232", I could suspect that it would be a 4K rom...
>
> Nope, it's 8K.  A DEC 23-xxxE4 part number specifies 8K ROM.  I expect 
> 8232 is the date code.
>
> -- 
> Pete
>
> Pete Turnbull