RE: [N8VEM: 202] Re: It's alive!

["Andrew Lynch" <lyn...@yahoo.com>]

Thanks Rich!  It looks great!  I have to say, I am a bit envious of your set
up.  Running WS 3.0 on a classic terminal is pretty darn cool!  

I bet there are a lot of CP/M veterans who would love to do that on some
real Z80 hardware.

Very impressive!  Great work!  Thanks and have a nice day!

Andrew Lynch

> -----Original Message-----
> From: n8...@googlegroups.com [mailto:n8...@googlegroups.com] On Behalf Of
> Rich Camarda
> Sent: Tuesday, July 01, 2008 11:45 PM
> To: N8VEM
> Subject: [N8VEM: 202] Re: It's alive!
> 
> 
> 
> Hi Andrew,
> 
> Thanks for the input. Yeah it would be good to treat the RAM drive
> sort of like the Compuro RAM drives where RESET did not wipe out the
> contents.
> 
> Ok, I just uploaded 3 pics showing Wordstar 3.0 running on the SBC.
> 
> 1st pic shows the WS files in the F> directory, 2nd pic is Wordstar
> loading, and 3rd pic shows WS up and working,  ready to edit!
> 
> Rich
> 
> On Jul 1, 8:19 pm, oh5nxo <juha.n...@quicknet.inet.fi> wrote:
> > The DS1210 has strange way to indicate a dry battery.
> > It blocks 2nd memory access if VBAT is under 2 volts.
> > I thought the Z80 refresh cycles would be harmful here,
> > but fortunately they aren't. Upper address bits come from
> > register I during /RFSH, don't they ? I is cleared by reset, and
> > accesses go to rom until banks are changed.
> >
> > It would be interesting to qualify /MREQ with inverted /RFSH
> > and check if there is any effect in power consumption.
> >
> > This doesn't always start properly when powercycled from supply.
> > My own fault, shouldn't have replaced LS14 with 04.
> > Or maybe the delay in bootstrap should be longer, DS1210
> > takes a long time (hundreds of milliseconds ?) to wake and allow
> > accesses. RAM contents have been safe though, overnight.
> >
> > Juha
>