Convert to mem.yaml format

[jotego]

Convert to mem.yaml format

[somhi]

1943 moving to mem.yaml wip commit

Empezando a mirarme la migración de cores a mem.yaml. Dudas iniciales:

• JTFRAME_SDRAM_BANKS entiendo se debe poner siempre en macros.def
• No he sabido identificar que usase más de 1 banco por lo que solo uso 1
• Todos los wire prom_xx_we = hay que inicializarlos y a que valor ?
• No me queda claro que valores poner en la sección download en mem.yaml

si prefieres en inglés contesta directamente en inglés y seguiremos así.

[jotego]

Let's try in English. If you find it troublesome we can switch to Spanish.

• JTFRAME_SDRAM_BANKS is added automatically, don't do anything.
• the original code only uses one bank, you can leave it like that for now.

The tough part here is moving the jt1943_prom_we module to mem.yaml and the game. That module did these functions:

1. collect the ROM download sent by the firmware through ioctl_wr
2. reorder some address signals so that the data is written in a different order than it comes in
3. for the final part of the rom, where the PROMs go, it identifies the different files in it and signals to each jtframe_prom module when to take data in

When you move to mem.yaml, number 1 comes for free, but you have to specify number 2. There are several ways of doing it. Checkout the Confluence documentation. If you do not do it right, the game will normally start but graphics will be corrupted.

For the PROMs, you basically move the code to the game module. Check out how these signals are done in other cores that have mem.yaml