If you do have it, the Main EPROM (not the Scanner EPROM) must be replaced temporarily with the Debug EPROM. Then follow the instructions I put in the other post about it (COM port, PuTTY, etc...).
For the exact serial connection parameters and the commands list, check the EII Service Manual.
rs
rs
On Sat, Dec 31, 2011 at 4:26 PM, trickstar303 <trickstar303@...> wrote:
Hi Ryan-
I actually have the Main Debug Rom Chip (.1.0), which I bought on Ebay a few years ago just in case I might need it. I never used it, so I'm not sure how to go about it...any help is appreciated.
George
P.S. Happy New Year> On Sat, Dec 31, 2011 at 2:37 AM, Mike wrote:
--- In emulatorII-list@yahoogroups.com, Ryan Supak wrote:
>
> For testing RAM, I've also had very good luck with the Debug EPROM. You can
> download the ROM itself from this site, and if you get to the point where
> you need help getting the Debug to run, post back here. I'll help out in
> any way I can.
>
> rs
>
>
> > **
> >
> >
> > I also would measure the voltages on the PS.
> >
> > But I'd suspect faulty RAM.
> > It may be the ram that runs the operating system.
> > (I've seen the exact same fault.. EII loads disk then crashes, and it was
> > a bad RAM IC)
> >
> > It may not be the ram that is bad, but it could be a poor connection.
> > (ie, reseat ALL the ram)
> >
> > The service manual mentions what IC's of RAM run the OS.
> > And you can swap that bank with the sample RAM freely. (bad sample ram
> > will have a distorted sound but the EII will still work)
> >
> > Personally, after measuring the PS, I'd just go ahead and gently lift each
> > IC up a few mm then press down. Then if that doesn't work, get hold of the
> > memory test disk (or if you have HxC, an image of it)
> >
> > Mike
> >
> > Sent from my Apple ][e
> >> > On 31/12/2011, at 12:46 PM, "trickstar303" wrote:
> >
> >
> >
> > Hi,
> >
> > My EII was working fine until today, when I fired her EII up after a pause
> > of 2 months. It'll boot the disk just fine and the LCD displays the name of
> > the loaded program. But there is no sound at the outputs, the control panel
> > is completely unresponsive when any buttons are pushed and it will start to
> > reboot randomly.
> >
> > I opened her up and tried to push all ICs and ribbon cables etc, but it
> > didn't help.
> >
> > Does anyone know what these symptoms could be?
> >
> > George
> >
> >
> >
>
Attachments
- No local attachments were found for this message.