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add some of the GBA slot/wifi timings

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Arisotura
2021-06-28 16:35:39 +02:00
parent 65aff943f6
commit c8af82af64
1 changed files with 83 additions and 3 deletions
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86
src/DMA_Timings.h
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@ -30,10 +30,18 @@ namespace DMATiming
// mode. // mode.
// It gets more complicated when transferring from main RAM to somewhere else, or // It gets more complicated when transferring from main RAM to somewhere else, or
// vice versa: main RAM supports burst accesses, but the rules dictating how long // vice versa: main RAM supports burst accesses, but the rules dictating how long
// bursts can be are weird and inconsistent. // bursts can be are weird and inconsistent. Main RAM also supports parallel
// memory operations, to some extent.
// I haven't figured out the full logic behind it, let alone how to emulate it // I haven't figured out the full logic behind it, let alone how to emulate it
// efficiently, so for now we will use these tables. // efficiently, so for now we will use these tables.
// A zero denotes the end of a burst pattern. // A zero denotes the end of a burst pattern.
//
// Note: burst patterns only apply when the main RAM address is incrementing.
// A fixed or decrementing address results in nonsequential accesses.
//
// Note about GBA slot/wifi timings: these take into account the sequential timing
// setting. Timings are such that the nonseq setting only matters for the first
// access, and minor edge cases (like the last of a 0x20000-byte block).
u8 MRAMRead16Bursts[][] = u8 MRAMRead16Bursts[][] =
{ {
@ -64,7 +72,49 @@ u8 MRAMRead16Bursts[][] =
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
7, 3, 7, 3,
0}, 0},
// // main RAM to GBA/wifi, seq=4
{8, 6, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5,
0},
// main RAM to GBA/wifi, seq=6
{10, 8, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7,
12, 8, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7,
12, 8, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7,
12, 8, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7,
12, 8, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7,
12, 8, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7,
12, 8, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7,
12, 8,
0},
}; };
u8 MRAMRead32Bursts[][] = u8 MRAMRead32Bursts[][] =
@ -93,7 +143,37 @@ u8 MRAMRead32Bursts[][] =
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
0}, 0},
// x // main RAM to GBA/wifi, seq=4
{14, 10, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9,
13, 10, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9,
13, 10, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9,
13, 10, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9,
13, 10, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9,
13,
0},
// main RAM to GBA/wifi, seq=6
{18, 14, 13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 13,
17, 14, 13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 13,
17, 14, 13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 13,
17, 14, 13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 13,
17, 14, 13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 13,
17,
0},
}; };
u8 MRAMWrite16Bursts[][] = u8 MRAMWrite16Bursts[][] =