Hi Phill,
I produced a couple of Trump card clones in the 80's and still have the
PCB designs at hand, so drawing up a schematic will not be difficult. If
you can mail me the PLD dumps I'll label and comment the equations for
you. I did this myself, but cannot locate the files any more.
Malcolm Lear wrote:
Hi Phill,
I produced a couple of Trump card clones in the 80's and still have the
PCB designs at hand, so drawing up a schematic will not be difficult.
Excellent :)
If
you can mail me the PLD dumps I'll label and comment the equations for
you. I did this
Ah, that brings all the memories back. I'm sure the chips were protected
and I had to switch all combinations of input to deduce the equations.
The good news is that I can lay my hands on a board I manufactured and
read back the equations from that.
Unfortunately the earliest I can do that is
Malcolm Lear wrote:
Ah, that brings all the memories back. I'm sure the chips were protected
and I had to switch all combinations of input to deduce the equations.
I did wonder about that :) :) I may have a go at hooking them up to an
AVR and getting it to scan and record for me :) :)
The
Phill Harvey-Smith wrote:
Indeed, I have worked out this much, however I think the RAM test takes
place before this point so will hit the mirrored rom and only see 640K
:( So there must be something else afoot :)
RAM test is pretty much the first thing the OS does, long before
initializing the
Since the RAM on a standard QL was only ever intended to extend up to
$B, would the test ever go beyond that.
Cheers
Malcolm
On 21/02/2011 14:50, Phill Harvey-Smith wrote:
Malcolm Lear wrote:
Ah, that brings all the memories back. I'm sure the chips were
protected and I had to switch
Malcolm Lear wrote:
Since the RAM on a standard QL was only ever intended to extend up to
$B, would the test ever go beyond that.
Yep it does, loop only stops when it finds a location where it gets a
different value back than it wrote.
Cheers.
Phill.
Marcel Kilgus wrote:
Phill Harvey-Smith wrote:
Indeed, I have worked out this much, however I think the RAM test takes
place before this point so will hit the mirrored rom and only see 640K
:( So there must be something else afoot :)
RAM test is pretty much the first thing the OS does, long
Hi all,
After a bit of back and forth, it looks like I will be assembling the
remaining stock of Tony Firshman's Mplane. If it happens, they will be
available in about 2-3 months. For those that don't remember, the MPlane
offers 3 expansion ports and has a 4-pin power connector to take power from
On Mon, Feb 21, 2011 at 12:06 PM, Lee Privett lee.priv...@gmail.com wrote:
Dave, it my help those like me with less knowledge of such things to know
exactly what QL'ers could make use of a back plane for, plugging in
additional peripherals such as floppy drive adapter are already realised
On Mon, Feb 21, 2011 at 12:59 PM, Adrian Ives adr...@acanthis.co.uk wrote:
Yes, the ATX connector (or better) is a must. You probably want to look
into
an adapter lead that also bridges the Power Good signal, otherwise you
won't
get the PSU to switch on. This is what I had to do with my
A backplane allows you to place each card in its own slot. It multiplies the
QL's expansion port into three, four or more ports. This means cards don't
Didn't Sinclair ROMs have a bug preventing usage of all expansion slots except
for the first one?
Daniele
On Mon, Feb 21, 2011 at 1:40 PM, JJ Ruiz jjruiz_r...@yahoo.es wrote:
I would get one to connect an Aurora and a Gold Card, powering them through
the backplane.
The 9V line, will carry 9V? or 5V? or it will be selectable? or it will be
selectable by each expansion connector?
ATX v2 PSUs
Dave Park wrote, on 21/Feb/11 19:04 | Feb21:
On Mon, Feb 21, 2011 at 12:59 PM, Adrian Ivesadr...@acanthis.co.uk wrote:
Yes, the ATX connector (or better) is a must. You probably want to look
into
an adapter lead that also bridges the Power Good signal, otherwise you
won't
get the PSU to
Dave Park wrote, on 21/Feb/11 19:45 | Feb21:
On Mon, Feb 21, 2011 at 1:40 PM, JJ Ruizjjruiz_r...@yahoo.es wrote:
I would get one to connect an Aurora and a Gold Card, powering them through
the backplane.
The 9V line, will carry 9V? or 5V? or it will be selectable? or it will be
selectable by
Dave Park wrote, on 21/Feb/11 19:41 | Feb21:
On Mon, Feb 21, 2011 at 1:05 PM, Daniele Terdinadanieleterd...@hotmail.com
wrote:
A backplane allows you to place each card in its own slot. It multiplies
the
QL's expansion port into three, four or more ports. This means cards
don't
Didn't
On Mon, Feb 21, 2011 at 9:05 PM, Daniele Terdina
danieleterd...@hotmail.com wrote:
Didn't Sinclair ROMs have a bug preventing usage of all expansion slots
except for the first one?
Being a re-newbie I also have (I hope!) a few related questions : This
might be a FAQ so apologies in advance if
Am 21.02.2011 21:47, schrieb Petri Pellinen:
On Mon, Feb 21, 2011 at 9:05 PM, Daniele Terdina
danieleterd...@hotmail.com wrote:
Didn't Sinclair ROMs have a bug preventing usage of all expansion slots except
for the first one?
Being a re-newbie I also have (I hope!) a few related questions :
At 19:33 21/02/2011 +, you wrote:
Only in the JM and previous rom versions. From JS onwards I believe it
works as it's supposed to.
Certainly Minerva and MG tested each 16k ROM slot when I made my 256k EPROM
expansion card
Incidently I mapped the floppy drive code in that slot freom 64k
On Feb 21, 2011, at 2:02 PM, Tony Firshman t...@firshman.co.uk wrote:
Dave Park wrote, on 21/Feb/11 19:04 | Feb21:
On Mon, Feb 21, 2011 at 12:59 PM, Adrian Ivesadr...@acanthis.co.uk wrote:
Yes, the ATX connector (or better) is a must. You probably want to look
into
an adapter lead that
On 22/02/2011 00:12, Dave Park wrote:
On Feb 21, 2011, at 2:02 PM, Tony Firshmant...@firshman.co.uk wrote:
And, have a good insulating backing plate, because there's nothing worse
than 40 amps of 12V shorting onto something metal in the case, or worse, to
something on a PCB...
Oh yes there
On Feb 21, 2011, at 6:27 PM, Phill Harvey-Smith a...@aurigae.demon.co.uk
wrote:
On 22/02/2011 00:12, Dave Park wrote:
On Feb 21, 2011, at 2:02 PM, Tony Firshmant...@firshman.co.uk wrote:
And, have a good insulating backing plate, because there's nothing worse
than 40 amps of 12V shorting
All this talk is making hunger for an SGC not having seen or used before, are
there really none out there or not ever being made?
Lee
- Back to the QL-
On 22/02/2011 00:12, Dave Park wrote:
On Feb 21, 2011, at 2:02 PM, Tony Firshmant...@firshman.co.uk wrote:
And, have a good
On 2/21/2011 7:51 PM, ql-users-requ...@lists.q-v-d.com wrote:
snip
And, have a good insulating backing plate, because there's nothing worse
than 40 amps of 12V shorting onto something metal in the case, or worse, to
something on a PCB...
Oh yes there is - a wet tongue (8-)#
Tony
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