Previous Thread
Next Thread
Print Thread
Page 14 of 396 1 2 12 13 14 15 16 395 396
Joined: May 2010
Posts: 1,051
S
Very Senior Member
OP Offline
Very Senior Member
S
Joined: May 2010
Posts: 1,051
I transcribed the ROM and ran it through a simple TMS1000 emulator I rigged up from Paul Robson's MicroVision emulator. It does something, but I didn't think to listen to any of the ports.
www.seanriddle.com/m32018a.bin

www.seanriddle.com/m32018araw.bin

Last edited by seanriddle; 01/01/15 06:46 AM.
Joined: Mar 2002
Posts: 1,255
Likes: 43
H
hap Offline
Very Senior Member
Offline
Very Senior Member
H
Joined: Mar 2002
Posts: 1,255
Likes: 43
Originally Posted By seanriddle
Cool detective work on MP3403! Do you have any samples of the jingles? I don't remember any horse racing games off the top of my head.


It's easy to hear them if you bash random buttons. MESS 0.157 was released yesterday. Try it :-) you can also see R and O activity.

Joined: Mar 2006
Posts: 1,073
Likes: 5
L
Very Senior Member
Offline
Very Senior Member
L
Joined: Mar 2006
Posts: 1,073
Likes: 5
press s and x a bunch and you'll hear it.
I thought it might be mattel's football II since the jingle is similar to the touchdown sound, but am not certain. (also mattel supposedly used rockwell chips at least for football I and baseball?)
It could be 'long bomb' as well, but that was an early lcd handheld and the process used to make its lcd was crappy, so very few if any examples have the lcd functional anymore (most have died of 'tunnel vision', similar to the powerbook 170 lcds)

LN


"When life gives you zombies... *CHA-CHIK!* ...you make zombie-ade!"
Joined: May 2010
Posts: 1,051
S
Very Senior Member
OP Offline
Very Senior Member
S
Joined: May 2010
Posts: 1,051
Originally Posted By seanriddle
Originally Posted By Lord Nightmare
Originally Posted By seanriddle

Let me know if you need any other areas.

Can you get the main rom of the tmc0271? I know there's a chip out of the corner of it, but 85% of it is still readable, and that would be enough for me to have a good confidence that it matches either the patent or parts of it.

LN

Yeah, I can start on that. I will be out for a while at the top of the month for work, but I'll get started.

OK, I got a preliminary file done. Here's the ROM pic and the raw and 0980-translated files. I used 0s for all the bits in the damaged area, and there are some bits of plastic obscuring some bits, so I did the best I can there. It's been too cold to play with hydrofluoric acid on the driveway, but when it gets warmer I'll do it and compare the transcriptions.

www.seanriddle.com/tmc0271nlrom1280.jpg

www.seanriddle.com/tmc0271nlrawpartial.bin

www.seanriddle.com/tmc0271nlpartial.bin

Joined: May 2010
Posts: 1,051
S
Very Senior Member
OP Offline
Very Senior Member
S
Joined: May 2010
Posts: 1,051
Originally Posted By hap
Originally Posted By seanriddle
Cool detective work on MP3403! Do you have any samples of the jingles? I don't remember any horse racing games off the top of my head.


It's easy to hear them if you bash random buttons. MESS 0.157 was released yesterday. Try it :-) you can also see R and O activity.

Just built it. Are the PLA files available anywhere?

Joined: Mar 2002
Posts: 1,255
Likes: 43
H
hap Offline
Very Senior Member
Offline
Very Senior Member
H
Joined: Mar 2002
Posts: 1,255
Likes: 43
Should be, but I don't know where people get download their roms nowadays (not to mention posting a link to a romsite is probably against forum rules).. I'll send you a mail

Joined: May 2010
Posts: 1,051
S
Very Senior Member
OP Offline
Very Senior Member
S
Joined: May 2010
Posts: 1,051
Hmm, I didn't think about the output PLA files being copyrighted, but I wouldn't put it past someone to try to copyright the equations for a 7-segment decoder! I guess they could have put the digits in a different sequence to make a unique file....

Joined: Nov 2003
Posts: 804
S
smf Offline
Senior Member
Offline
Senior Member
S
Joined: Nov 2003
Posts: 804
I don't believe it would be copyrightable in the US

"If a pictorial, graphic or sculptural work is a useful article, it is copyrighted only if its aesthetic features are separable from its utilitarian features. A useful article is an article having an intrinsic utilitarian function that is not merely to portray the appearance of the article or to convey information. They must be separable from the functional aspect to be copyrighted."

However it's probably safest to assume that all roms are copyrightable as it avoids getting involves with layers.

Joined: Feb 2014
Posts: 852
Likes: 48
G
Senior Member
Online Content
Senior Member
G
Joined: Feb 2014
Posts: 852
Likes: 48
There's a cool interview with Mark Lesser (who created a lot of Mattel's early led handhelds) at digital press. It's a pretty good read.

http://www.digitpress.com/library/interviews/interview_mark_lesser.html

And one at Popular Mechanics too.

http://www.popularmechanics.com/technolo...-games-15987495

Joined: May 2010
Posts: 1,051
S
Very Senior Member
OP Offline
Very Senior Member
S
Joined: May 2010
Posts: 1,051
I did a search for "vintage teardown" on youtube and got a few interesting hits. mr1968geek has several handheld game teardowns, including a couple that I've bought- Entex Space Invader and Coleco Quiz Wiz. My Space Invader has a National Semi COP444L, but his has a TI chip, likely a TMS1x00 (MP1211). The Quiz Wiz has completely different markings, but that's a custom chip, so I'm not surprised. He also has vids of Coleco Digits (like Comp IV) with a GI AY-3-8400, Entex Electronic Baseball with a TMS1000 (MP0914), Videomaster Colourscope TV Games with a National NS/743 MM57105N, and an Invicta Electronic Mastermind with a Rockwell MM75 (the smaller PPS-4/1). That's a nice selection of chips, but unfortunately no MP3403....

Page 14 of 396 1 2 12 13 14 15 16 395 396

Link Copied to Clipboard
Who's Online Now
0 members (), 19 guests, and 3 robots.
Key: Admin, Global Mod, Mod
ShoutChat
Comment Guidelines: Do post respectful and insightful comments. Don't flame, hate, spam.
Forum Statistics
Forums9
Topics9,100
Posts119,253
Members5,019
Most Online890
Jan 17th, 2020
Our Sponsor
These forums are sponsored by Superior Solitaire, an ad-free card game collection for macOS and iOS. Download it today!

Superior Solitaire
Forum hosted by www.retrogamesformac.com