these RTL or what?

[Allison]

>
>Subject: Re: these RTL or what?
>   From: woodelf <bfranchuk at jetnet.ab.ca>
>   Date: Mon, 08 Oct 2007 12:11:23 -0600
>     To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
>
>Allison wrote:
>
>> RX02 works with PDP-8, WD1793 works with Cmos6120 (PDP-8), VAXen and 
>> other long word machines are using floppy and other 8bit interfaces.
>> VAX 780 microcode was loaded from floppy.
>
>I grew up in alas in a PC world.I got to play with a 8 but that
>is about all.

I'd have guessed that. ;)

>
>> Most of those systems had already dealt with the 8bit/n-bit issue
>> and as devices got larger and space less an issue it became less 
>> an issue.  If it were, then PCs would have 32bit wide HDC rather 
>> than 16bit.
>
>I like 16 bits for IDE ... You can cut that down to say 12 bits for
>your PDP-8. 9 or 12 bits for the cpu depending on what cpu I build.:)

True.  But since the 386, PCs are 32bit, for that fact since 1978
VAX was 32bit.. You would have thought a wider IDE or data channels
would have happend. But it hasn't.  

IO devices often lagged the CPUs or were designed for the devices 
convenience or so it seemed.  I feel legacy, (not always PCs) 
played  distinct factor as well.



Allison