MAMEWorld Forums - News - Re: DU: Holiday Bits *edit*

>system11 dumped an alt version of Mahjong Clinic and sorted some info with Thunder Zone dumps.

Good to see more documentation added for sorting out the game/hardware variations. LN's work from a few days earlier is good too.

-
Lord-Nightmare
2016-12-15

tnzs.cpp: Update a slew of comments, add most missing pals as undumped, fix some rom labels, add a chart of the different Taito/Seta PCBs covered by tnzs.cpp and the differences between each. [Lord Nightmare]
-

*off topic*

Over on handheld scene, another item is emulated, but....

--
hh_cop400: promoted qkracer to working

National Semiconductor's QuizKid Racer (COP420 version)

National Semiconductor QuizKid Racer (COP420 version)
* COP420 MCU label COP420-NPG/N

This is the COP420 version, the first release was on a MM5799 MCU.
-

...maybe support for Mattel Electronics Basketball is almost approaching.

*excerpt info from Sean's site*

-
National Semiconductor MM5799

MM5799 is a National Semiconductor microcontroller in the COPS I family.

data sheet from 1977 National MOS LSI Databook

The MM5799 has 1.5 K of 8-bit ROM and 96 4-bit nibbles of RAM. It was used in games like Mattel Basketball, Hockey and Soccer, as well as educational calculators like Quiz Kid Racer and Quiz Kid Speller.

In these games, the die is bonded directly to the PCB and protected with a plastic cover. That makes it easier to get die shots, although it's very easy to break the exposed bond wires. The marking on the die says MM4799 instead of MM5799.
-

Edited by gregf (12/19/16 09:11 PM)