Can you check your –5V rail? It should be a solid –5V +/- a few %.Might
also want to check the +5V rail. If the –5V is low or is very unstable then……
It is most likely due bad electrolytic caps. The contrast on the screen is
controlled by the –5V.
Unfortunately the caps will need to be
Hi all-
Anything in particular I can do to fix a flickering display? It's just
started happening. It was doing it on an AC adapter so I unhooked that and
put in four fresh AAs, but it kept doing it. I did open it up and checked
the movement on the contrast knob and that seemed fine. I'm just
It has a DB15 connector that you use to plug in the serial transfer
cable or the parallel printer cable. It is not much use for writing if
I cannot get said writing out of it. I could make a cable, but I can't
find anything about the cables or the pinout of the connector.
BTW my unit could have a
Thanks for setting this up! I’ve downloaded several games and a couple of
utilities through my iPhone, with no problem. A simple joy from the user’s
perspective, but I realize it represents a lot of work behind the scenes.
Perhaps I missed it in a prior part of the thread, but it would be great
Team, the programs in the Text tab are up.
new shorter link to archive:www.sonore.us/m100
Jesus R
I went ahead and returned the Paladin Measuring System so it's longer
available.
Jesus R
Hi Bert -
The seeming conundrum of 16-bit addressing of > 64K
is accomplished by switching "Banks" of memory - For
instance my 8201a has a 32K ROM, & 3 banks of 32K
RAM which may be addressed at any one time.
Further, there's a system bus connector which allows a
plug-in 128K RAM cartridge
On Sat, Sep 29, 2018, 7:02 AM Bert Put wrote:
> Is that correct? 2 Meg of ROM but only 32K of RAM? I thought the Z80
> could only address 64K of memory at a time.
>
> And BTW, in case no one has said it, thank you for helping keep the list
> a fun place to be. :-)
>
Well the 8085 only has 64k
Is that correct? 2 Meg of ROM but only 32K of RAM? I thought the Z80
could only address 64K of memory at a time.
And BTW, in case no one has said it, thank you for helping keep the list
a fun place to be. :-)
Cheers,Bert
On 09/18/2018 03:13 PM, John R. Hogerhuis wrote:
> I saw your
