tip! I will check it out.
>
> In the M100, RAMRST is meant to protect the ram. However, in QUAD one has to
> back drive RAMRST to essentially put the internal memory on hold.
>
> On Sun, Nov 5, 2017 at 12:06 PM, Atsushi Takahashi
> wrote:
> Dear Steve,
>
> I ordere
Dear Steve,
I ordered the old QUAD boards from OSH Park but I also purchased one of these
LM810M3-4.63/NOPBCT-ND
from Digi-Key in an attempt to address the power on reset issue. It’s just a
three pin surface mount chip. I used to have something like that in my 68hc11
boards… Do you think they
Hi All,
I’m not sure leaving a CMOS chip input open is a good idea. The OE and PGM/
should be pulled to their respective enabled states or the output may not be
predictable. I suspect Vpp is not necessary to connect.
Atsushi
On Jul 4, 2017, at 8:01 PM, Gary Weber wrote:
> I found some usef
>
> TC551001 of A or B or C would work.
> Steve
>
> On Monday, August 1, 2016, Atsushi Takahashi wrote:
> > HI Steve,
> >
> > I’m having a little trouble finding the TC551001 RAM chips :-( From
> > looking at the photo
> > (http://bitchin100.com
er-DE1557-/310891410876?hash=item48629275bc:g:Fz0AAOSw-jhUHNTp
>
> these would work for pins..
>
>
>
> On Thu, Jun 16, 2016 at 4:14 PM, Atsushi Takahashi
> wrote:
>> Dear Steve,
>>
>> I’m excited that you released the QUAD PC board! I’m a new Model 100 owner
&g
cents per pin. Logic parts look right.
> there are variants that also work, TC551001 BFTL for example. no
> need for low leakage but it's better of course.
>
> the time constant has to be big. I think I use 500kohm and 1uF.
>
> On Thu, Jun 16, 2016 at 4:14 PM, Atsushi Ta
Dear Steve,
I’m excited that you released the QUAD PC board! I’m a new Model 100 owner with
a long history going back to the S-100 bus days. Most of the components on the
board are in the photo on the QUAD web page but I was wondering what capacitors
and resistor values are needed: 0.1uF bypass
Hi All,
I'm a Newbie and have been lurking for a month or two...
I would love to try to solder a REX if you release them. I was also wondering
about QUAD but I guess that needs a PLA or some other chip programmed...
Atsushi
> On May 17, 2016, at 9:48 AM, Stephen Adolph wrote:
>
> ..re REX.
