"Old PC" emulation ?

[Dave Brown]

I'm fairly sure it's really a software issue related to timing - I 
suppose there could be genuine hardware limitations (speed wise) with 
some of the early chips-although I doubt that bus speeds were fast 
enough to bring those limitations into play.

DaveB

----- Original Message ----- 
From: "Fred Cisin" <cisin at xenosoft.com>
To: "General Discussion: On-Topic and Off-Topic Posts" 
<cctalk at classiccmp.org>
Sent: Wednesday, November 03, 2004 10:40 AM
Subject: Re: "Old PC" emulation ?


> On Wed, 3 Nov 2004, Dave Brown wrote:
>> I've not come across it with serial ports but it's a common problem
>> with older hardware that connected to the system bus- I have 
>> several
>> older GPIB cards that won't run in anything later than a 286 and an
>> EPROM burner card that won't operate in anything later than a 
>> genuine
>> XT.
>
> The Cordata/Corona Data Systems laser printer interface card
> is for PC/XT.  Attempting to install the software on 286 or
> above gives a message telling you not to, and mentioning a
> 286 version of the board that may or may not have ever existed.
>
> Is the hardware actually incompatible?
> Or is it a bogus test by the software?
>
>
>
>