Arcade board
exe...@nunya.biz
Hope you can do some interesting things with it
Roy
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Michael J. Mahon
>Congrats on the auction Michael.
>
>Hope you can do some interesting things with it
Thanks!
I had my eye on it for almost a week. An interesting combo
of 9918 sprite card and AY-3-8910 sound chip.
Also interesting that they didn't find a way to route the video
output on the PC board. ;-)
-michael
Check out parallel computing for 8-bit Apples on my
Home page: http://members.aol.com/MJMahon/
Steven N. Hirsch
> I had my eye on it for almost a week. An interesting combo
> of 9918 sprite card and AY-3-8910 sound chip.
>
> Also interesting that they didn't find a way to route the video
> output on the PC board. ;-)
I missed the run-up to this. A friend of mine who I have not seen in
years designed a board called the "Sprite-n-Stereo" card. Is that what
you have? If so, quite a rarity.
Steve
Michael J. Mahon
It's pretty close! There is one AY-3-8910, so it's a "Sprite-n-Mono"
card. ;-) I note from the picture, though, that there's some 2-channel
funny business at the audio end, so maybe it _is_ stereo...that would
mean that the video is available only at the RF modulator connector.
I've never seen this combo before, and am looking forward to seeing
how the 9918A and the '8910 are interfaced, since there's nothing
but "glue" logic on the card.
Ralfe Cookson
not sure what board you are talking about. But because the subject is
"Arcade Board" and there was a board with TMS9918A and AY3-8910 on it
marketed as the "Arcade Board" by Third Millennium Engineering around
1983 - 1984, I am wondering if this might be it. If so it has some
programmable filters (low pass, high pass, band pass) on the PSG
outputs. It only has mono outputs and the Apple interface bus timing
for the AY3-8910 was a little flakey.
mjm...@aol.com (Michael J. Mahon) wrote in message news:<20040814033629...@mb-m05.aol.com>...
Bill Garber
"Michael J. Mahon" <mjm...@aol.com> wrote in message
news:20040814033629...@mb-m05.aol.com...
This last phrase is Bogus. It's best known as GLU or General
Logic Unit.
The TTL chips on the card are the Logic. The CFFA has GLU in the
form of
a CPLD. Most earlier Apple IF cards have individual gates making
up their
Logic so they don't have GLU.
Thank you. We now return you to your previously scheduled topic.
:o)
Bill @ GarberStreet Enterprizez };-)
Web Site - http://garberstreet.netfirms.com
Email - willy46pa @ comcast DOT net
Change DOT to a dot to contact me
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exe...@nunya.biz
Ralfe Cookson wrote:
> My newsreader does not have the first messages of this thread, so I am
> not sure what board you are talking about. But because the subject is
> "Arcade Board" and there was a board with TMS9918A and AY3-8910 on it
> marketed as the "Arcade Board" by Third Millennium Engineering
This card is by Third Millennium.
Roy
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Michael Black
of logic needed to fit things together. You can have a real fancy IC,
but be unable to connect it to a CPU bus because it needs some
other things, and that's the glue. Anything more integrated derives
from this common terminology.
Michael
Michael J. Mahon
Yes, this is the Third Millenium Engineering Arcade Card.
If you have more info about the card, or its software, I would be very
interested. It has two RCA connectors. I assumed one was audio
and one was video, but that appears to be incorrect.
It also has a "flying lead" with a single-pin connector on the end, which
I took to be a video coax, but it isn't. What is this and what does it
connect to?
There is also a 4-pin Molex connector like the Apple II modulator
connector. Is this the only video output? Are the two RCA's audio
outputs? ???
I haven't started to dig into it yet, so if anyone has any information
on this card, I would be delighted to hear more. ;-)
I was surprised that the '8910 was interfaced without benefit of latches,
so your remark about marginal interface to the Apple bus sounds
right. Did it work OK, or were there intermittent glitches?
Peter de Vroomen
> This last phrase is Bogus. It's best known as GLU or General
> Logic Unit.
Aren't you a bit confused with the 'GLU' chip in the Atari ST's? It was
short for Generalized Logic Unit. It acted as the glue that connected all
the components :).
'Glue logic' has imo allways been the term for all the extraneous logic
needed to connect the more integrated stuff to each other. Buffers and
latches are generally not seen as glue logic, although they are also needed
to help stuff work with each other.
PeterV
Bill Garber
"Peter de Vroomen" <peterv[at][spamblock]jaytown[dot]com> wrote
in message news:4120bd41$0$65124$e4fe...@news.xs4all.nl...
:
: > This last phrase is Bogus. It's best known as GLU or General
: > Logic Unit.
:
: Aren't you a bit confused with the 'GLU' chip in the Atari
ST's? It was
: short for Generalized Logic Unit. It acted as the glue that
connected all
: the components :).
Nope, not confused at all, in fact, that is exactly what I said.
a "GLU" is a single chip that performs the function of sometimes
an entire card full of logic gates. For example, the CPLD on the
CFFA could be called a "GLU".
: 'Glue logic' has imo allways been the term for all the
extraneous logic
: needed to connect the more integrated stuff to each other.
Buffers and
: latches are generally not seen as glue logic, although they are
also needed
: to help stuff work with each other.
Although in the A2 and some of the Commodore worlds that term
is wide-spread, I had never heard it used to describe "Logic"
in the sense of many chips. We always just called it "Logic".
Ralfe Cookson
> Yes, this is the Third Millenium Engineering Arcade Card.
>
> If you have more info about the card, or its software, I would be very
> interested. It has two RCA connectors. I assumed one was audio
> and one was video, but that appears to be incorrect.
I can dig up some more info, but it may be a few days. But the two RCA
connectors were composite video and mono audio. They should work when
plugged into a TV with RCA video and sound inputs. Which connector is
which I do not remember, but you can probably trace the one connected
to the video output transistor (2N3904) from the VDP chip. The PSG I
believe used 741 op amps for audio.
There was software that came with the card as well as a manual of
sorts. There was also an extension to Applesoft BASIC, using &, that
allowed to program the main features of the VDP and PSG in BASIC.
> It also has a "flying lead" with a single-pin connector on the end, which
> I took to be a video coax, but it isn't. What is this and what does it
> connect to?
The single wire plugged into the Apple's RCA video connector so that
the video from the card could be Apple video in pass-thru mode, or the
VDP video, if it was enabled.
> There is also a 4-pin Molex connector like the Apple II modulator
> connector. Is this the only video output? Are the two RCA's audio
> outputs? ???
The 4 pin connector was for RF modulator.
Michael J. Mahon
>Nope, not confused at all, in fact, that is exactly what I said.
>a "GLU" is a single chip that performs the function of sometimes
>an entire card full of logic gates. For example, the CPLD on the
>CFFA could be called a "GLU".
>
>: 'Glue logic' has imo allways been the term for all the
>extraneous logic
>: needed to connect the more integrated stuff to each other.
>Buffers and
>: latches are generally not seen as glue logic, although they are
>also needed
>: to help stuff work with each other.
>
>Although in the A2 and some of the Commodore worlds that term
>is wide-spread, I had never heard it used to describe "Logic"
>in the sense of many chips. We always just called it "Logic".
I didn't say GLU, I said "glue".
"Glue" chips or "glue" logic is the generic term used for
decades by logic designers to describe the SSI chips
(gates, inverters, and such) needed to connect more
highly integrated chips together.
Bogosity factor = 0.
Michael J. Mahon
>mjm...@aol.com (Michael J. Mahon) wrote in message
>
>> Yes, this is the Third Millenium Engineering Arcade Card.
>>
>> If you have more info about the card, or its software, I would be very
>> interested. It has two RCA connectors. I assumed one was audio
>> and one was video, but that appears to be incorrect.
>
>I can dig up some more info, but it may be a few days. But the two RCA
>connectors were composite video and mono audio. They should work when
>plugged into a TV with RCA video and sound inputs. Which connector is
>which I do not remember, but you can probably trace the one connected
>to the video output transistor (2N3904) from the VDP chip. The PSG I
>believe used 741 op amps for audio.
There are two LM747's and two 4052's.
And you are right, the upper RCA connector is video, and the lower
is audio--no stereo here.
>There was software that came with the card as well as a manual of
>sorts. There was also an extension to Applesoft BASIC, using &, that
>allowed to program the main features of the VDP and PSG in BASIC.
Both of those items would be of _great_ interest!
>> It also has a "flying lead" with a single-pin connector on the end, which
>> I took to be a video coax, but it isn't. What is this and what does it
>> connect to?
>
>The single wire plugged into the Apple's RCA video connector so that
>the video from the card could be Apple video in pass-thru mode, or the
>VDP video, if it was enabled.
I wondered if it was intended to go into the Apple video connector.
It's only about 7" long, so this card would have to go in an "upper"
slot.
>> There is also a 4-pin Molex connector like the Apple II modulator
>> connector. Is this the only video output? Are the two RCA's audio
>> outputs? ???
>
>The 4 pin connector was for RF modulator.
That's what I expected...
>> I haven't started to dig into it yet, so if anyone has any information
>> on this card, I would be delighted to hear more. ;-)
>>
>> I was surprised that the '8910 was interfaced without benefit of latches,
>> so your remark about marginal interface to the Apple bus sounds
>> right. Did it work OK, or were there intermittent glitches?
Any info on the solidity of the chip timing?
Thanks for the info!