(INTV Core) How does the INTV2 format define RAM?

[spspspspspsp]

There are some games that have a defined RAM address range.

I was testing Missile Domination today, and the game crashed whenever I started the game or enter the options menu. I was double-checking my address definitions (looked OK) and started wondering about RAM.

Missile Domination is mapped like so: [mapping] $0000 - $1DFF = $5000 $1E00 - $29FF = $D000 $2A00 - $39FF = $F000 [memattr] $8000 - $81FF = RAM 16

And I converted the game to .intv using the following definition in int2intv: MapAddress[0] = 0x5000; DataSize[0] = 0x1E00; MapAddress[1] = 0xD000; DataSize[1] = 0x0C00;
MapAddress[2] = 0xF000; DataSize[2] = 0x1000;

How do I add RAM to this?

[spspspspspsp]

Wait, re-reading the INTV2 description I see a bit about RAM.

Adding the following may work.

MapAddress[1] = 0x8000; DataSize[1] = 0x0200;

Then the docs say bit 16 is used to indicate whether a range is writable. Does that mean bit 16 of "0x8000" or bit 16 of "00 80 00 00" in the binary?

[spspspspspsp]

I got a little further by adding a bank like /00 80 00 00\ /00 02 00 00\ (followed by zeroed data) at the end of the file and after the ROM bank at $5000.

I tried flipping bits from 0 to 1 in this address/length declaration, and when, for example, I use /10 80 00 00\ /00 02 00 00\ I can access the options menu, but I cannot set options, nor can I see the cursor or missiles during gameplay.

How does the RAM declaration work?

And should the RAM bank be at the end of the data or in the middle (in numerical order with the other ROM banks)?

[tjanas]

@spspspspspsp I do not know the answer to this question, but you may have luck at the repo where the latest JB firmware is being hosted: https://github.com/analoguejb/Analogue-Nt-Mini-Noir-JB