Re: Project PENTAGON-1024 SL

KF> Click on RESET immediately, Chunin Roman!

KF> On Wed, 27 Oct 04 14:26:24 +0400, Chunin Roman wrote:

AR>>> under what conditions and why? Why do you need this list? As for me, all ISA
AR>>> cards are potentially needed for ZX.
CR>> ISA-8 is implemented in Sprinter-2000.

KF> No.

Yes, it is implemented, maybe not completely, but modems and COM ports work, I haven’t seen any other
8-bit ISA.
I have a Sprinter alive so it’s better not to argue with me, I’m better I know
:-)

ATM2+ user, Sprinter-2K. NedoPC group. http://chunin.infpres.com

KF> On Fri, 29 Oct 04 09:21:26 +0400, Chunin Roman wrote:

AR>>> The question here is not in bits, but in the fact that there are currently no prerequisites for
AR>>> the appearance of a full-fledged 16bit controller for ZX.
CR>> No, that’s the question. If we take the ISA frequency (8Mhz), then the spec needs
CR>> a speed of 16Mhz. And secondly, why does the spec need this, there is a wonderful
CR>> ZX_BUS

KF> As for the speed, this is nonsense, unfounded.
Excerpt from the ISA description:

OSC - The output of the system oscillator, typically around 8-20MHz
(traditionally 14.318MHz).

CLK - Traditionally the processor clock signal with a 33% duty cycle
(4.77MHz). More recent PC systems will have frequencies in the range of
4-10MHz. The frequency of this clock output should always be measured to
insure that it is used properly.

And regarding the “nonsense”, please give reasoned arguments, otherwise you don’t have an ISA on the Sprinter
(then I wonder where my pisyukan modem is connected :-), although it
is there, etc. etc.