Re: [N8VEM: 19285] Zeta SBC V2

Subject: Re: [N8VEM: 19285] Zeta SBC V2

From: Anthony DeStefano <a...@fastmail.fm>

Date: Fri, 13 Feb 2015 08:30:09 -0500

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On Thu, Feb 12, 2015, at 07:23 PM, Max Scane wrote:

Hi Sergey,

The updated design looks great. Please count me in for one!

I'm wondering how important is it to have a floppy controller on board? Would you consider trading the floppy for an 8 bit bus connected IDE port (like the Mark IV). It could be used for a compact flash or industrial flash drive in 8 bit mode.

The CTC is a good addition to provide vectored interrupts as well as a interval timer. Is there a spare channel to take an interrupt form the 8255? I think the PPP puts the 8255 in mode 2 so any keyboard activity could generate an interrupt instead of being polled.

I'd second the tying the keyboard into an interrupt. When I wrote the N8VEM PropIO code for FUZIX I was surprised there was no interrupt routed on the board. One of these days I do need to fix that up and get it tied into the console subsystem.

Follow-Ups:

Re: [N8VEM: 19285] Zeta SBC V2
- From: Borut <bkor...@gmail.com>

References:

Zeta SBC V2
- From: Sergey <skis...@gmail.com>
Re: [N8VEM: 19281] Zeta SBC V2
- From: Max Scane <mjs...@gmail.com>