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December 3, 2021

Work Update

(Español abajo)

I miss releasing new games on Fridays, but don't think we're not busy here! This is what's going on:

-NeoGeo Pocket CPU design for FPGA is at the architecture stage, with a few options already discarded. The design has now the indexed memory controller, the register bank, the memory fetcher and dummy control to hold it together

-Some long-standing issues in old repositories were fixed last week. They were affecting Double Dragon, Tokio and Willow arcades

-Shadow mask rotate option added to CAPCOM CPS"0" games

-A UART has been added to JTFRAME to support communication among different arcade boards or computers. We have some plans for this

-Work on Twin Cobra schematics: sound, palette and layer priority circuits are almost done now. We moved to the character generator today

-We set up a new linux workstation in the lab for arcade PCB work and a windows laptop to use with the EEPROM burner. We also acquired a precision power supply for the lab. Finally, we set up a NAS to share information among the three computers. (And we dropped and broke the desolder gun...)

-We are preparing a day trip to an arcade museum next week to measure a Side Arms PCB they have. Side Arms has a wrong starfield (yes, again), and we want to get to the bottom of this

Thank you for your support!

Español

Echo de menos lanzar nuevos juegos los viernes, ¡pero no creas que no estamos ocupados aquí! En esto estamos liados:

-El diseño de la CPU NeoGeo Pocket para FPGA está en la etapa de arquitectura, con algunas opciones ya descartadas. El diseño ahora tiene el controlador de memoria indexada, el banco de registros, la caché de memoria y un control burdo para poder simular el resto.

-La semana pasada solucioné algunos problemas pendientes en repositorios antiguos. Afectaban a títulos como Double Dragon, Tokio y Willow.

-Añadida la opción de rotación de máscara de sombra a los juegos CAPCOM CPS "0"

-Se ha agregado una UART a JTFRAME para la comunicación entre diferentes arcades o computadoras. Tenemos algunos planes para esto...

-Trabajo en esquemas de Twin Cobra: los circuitos de prioridad de capas, sonido y paleta de color están casi terminados. Pasamos al generador de caracteres hoy.

-Configuramos una nueva estación de trabajo Linux en el laboratorio para trabajar analizando placas arcade y una computadora portátil con Windows para usar con el grabador EEPROM. También adquirimos una fuente de alimentación de precisión para el laboratorio. Finalmente, configuramos un NAS para compartir información entre las tres computadoras. (Y se nos calló y rompió la pistola desoldadora...)

-Estamos preparando una excursión de un día al museo Arcade Vintage (en Ibi) la semana que viene para medir un PCB de Side Arms que tienen. Side Arms tiene un campo de estrellas equivocado en emulación y FPGA (sí, de nuevo), y queremos arreglar ese también

¡Gracias por tu apoyo!

Comments (23)

N
Niclas Carlsson · August 12, 2022

Any additional progress on twin cobra?

J
JOTEGO · August 12, 2022

I haven't started on the DSP chip it uses yet.

D
Dorn jv · December 7, 2021

We miss your update too 😀. I m so excited for what it's coming. Thanks a lot

c
circletheory · December 7, 2021

Your hard work is appreciated!

A
Allen Tipper · December 5, 2021

For me, you did effectively release a new game on Friday: Tokio wasn't previously playable on my setup due to the screen flip not working, now it is. So, thanks a ton for that!

J
JOTEGO · December 6, 2021

I'm glad to hear that!

J
John Figueroa · December 4, 2021

Keep up the amazing work! Looking forward playing NGPC games in a CRT!

H
Hiddenbyleaves · December 4, 2021

Exciting

J
Jo Tomiyori · December 4, 2021

This is wonderful. Thank you for the update!

T
Todd Lemons · December 4, 2021

Awesome stuff

J
Juan Diego · December 3, 2021

Como siempre, gracias Jose por tu trabajo. Para cuando esa visita a Arcade Vintage? Habrá charla? Un saludo

J
JOTEGO · December 4, 2021

El próximo sábado pero será sólo para medir la placa, no creo que dé tiempo a más.

M
Mark Saunders · December 3, 2021

Long live JT Friday , and the work that you do ! The visit to the arcade / bring back those days

m
michael kilpert · December 3, 2021

Thank you jotego for all the cores you have done and thanks for the neogeo pocket color cheers for all you do please continue

S
Southpaw · December 3, 2021

NGPC has some great games, thanks for your work to preserve that hardware!

C
Carlos Schulte · December 3, 2021

My Hakko 808 broke as well, when it fell off my workstation. It snapped in two right where the heating element and the filter pipe meet. I was able to cobble it back together with some epoxy putty. It still works fine 5 years later.

A
Andrea Bogazzi · December 3, 2021

lol starfields :D

H
HendrixTrog · December 3, 2021

Great work as always!

N
Nedyahwerd · December 3, 2021

I love the "Visiting and Arcade museum". Kinda jealous.

G
Gianluca Piccioni · December 3, 2021

Please bring us Robocop :)

J
J.R. Raith · December 3, 2021

Excellent update! Thank you for working on NGPC, too! It's a great little machine that more people need to be exposed to.

F
Filip Kindt · December 3, 2021

Arcade museum: don't forget to enjoy to play ;)

F
Francisco Blazquez · December 3, 2021

una vez más. Gracias