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nitro2k01 · 08-02-2017, 05:55 PM

Has anyone tried these on NDS's GBA mode to see if the results differ from GBA hardware?

***endrift*** · 08-02-2017, 09:54 PM

Yeah, they don't.

pepposole · 11-20-2017, 03:32 PM

Endrift-san!

First of all, thank you for your incredible work you did so far!

Sorry for the stupid question (i think i already know the answer) but... did you take reference values by running your Test Suite ROM on a real GBA?

***endrift*** · 11-21-2017, 01:23 AM

Yes.

Arbee · 12-05-2017, 05:10 AM

So I know normal ARM CPU loads/stores follow the ARM standards for unaligned loads/stores on pre-v5 CPUs. Do DMAs? Do LDMIA/STMIA?

***endrift*** · 12-05-2017, 03:31 PM

LDMIA/STMIA force alignment to 4 bytes IIRC. I haven't written the tests for that yet though. As for DMAs, I'm not 100% sure but I think they force align to at least 2 bytes.

Gamersmith · (This post was last modified: 09-25-2019, 08:30 AM by Gamersmith.)

(11-07-2015, 06:01 AM)Spikestuff Wrote:

Based Mappy with https://garoms.com/gba/

Edit: Q: Can I use r26 to make a list?
A: No.

Edit: Q: Can I use r29 to make a list?
A: No.

Edit: Q: Can I use r33 to make a list?
A: No.

Edit: Q: Can I use r35 to make a list?
A: Yes, you, no wait, no... iGBA

correct, I apply it..

Riven Skaye · 05-15-2026, 10:27 AM

Time to revive this. GBE+ is still under active development and aims to emulate a lot of peripherals and exotic features in addition to the normal games, with accuracy being a sub-goal to that. So, here's the results when ran on GBE+ version 1.10 compiled with fast instructions (I'll build and test without later) and test suite r0.76:

Memory
754/1552
I/O Read
24/130
Timing
127/2020
Timer count-up
181/936
Timer IRQ
6/90
Shifter
140/140
Carry
71/93
Multiply long
52/72
BIOS math
Crashed on a floating point exception
DMA
932/1256
SIO register R/W
7/90
SIO timing
Killed because it seemed to run endlessly
Misc. edge case
1/12
Video - Basic 3
1:1 match
Video - Basic 4
1:1 match
Video - Degenerate OBJ transforms
1:1 match
Video - Layer toggle
Vertical height mismatch, see screenshots
Video - Layer toggle 2
Large differences, see attached screenshots at the bottom
Video - OAM Update Delay
The green overlay mismatches vertical positions
Video - Window offscreen reset
Top half is fully white in the actual, instead of just the expected top-left quarter

Attached screenshots are only the "actual" screens due to the limited amount on a post