Boy is a Gamboy (dmg not 0) emulator written in Java.
- Writing a good understandable emulator without any magic
- Understanding how the hardware works to make a clear implementation
- Having the best performance
- Pass all tests for dmg (not 0)
- Implement sound
- Make implementation of MBC1 clearer
- Implement all other MBC's
Blargg's cpu_instrs tests
| Test |
Boy |
| 01-special |
👍 |
| 02-interrupts |
👍 |
| 03-op sp,hl |
👍 |
| 04-op r,imm |
👍 |
| 05-op rp |
👍 |
| 06-ld r,r |
👍 |
| 07-jr,jp,call,ret,rst |
👍 |
| 08-misc instrs |
👍 |
| 09-op r,r |
👍 |
| 10-bit ops |
👍 |
| 11-op a,(hl) |
👍 |
Blargg's instr_timing tests
Blargg's mem_timing tests
| Test |
Boy |
| 01-read_timing |
👍 |
| 02-write_timing |
👍 |
| 03-modify_timing |
👍 |
Mooneye GB acceptance tests
| Test |
Boy |
| add sp e timing |
👍 |
| boot div dmgABCmgb |
❌ |
| boot hwio dmgABCmgb |
👍 |
| boot regs dmgABC |
👍 |
| call timing |
👍 |
| call timing2 |
👍 |
| call cc_timing |
👍 |
| call cc_timing2 |
👍 |
| di timing GS |
👍 |
| div timing |
👍 |
| ei sequence |
👍 |
| ei timing |
👍 |
| halt ime0 ei |
👍 |
| halt ime0 nointr_timing |
👍 |
| halt ime1 timing |
👍 |
| halt ime1 timing2 GS |
👍 |
| if ie registers |
👍 |
| intr timing |
👍 |
| jp timing |
👍 |
| jp cc timing |
👍 |
| ld hl sp e timing |
👍 |
| oam dma_restart |
👍 |
| oam dma start |
👍 |
| oam dma timing |
👍 |
| pop timing |
👍 |
| push timing |
👍 |
| rapid di ei |
👍 |
| ret timing |
👍 |
| ret cc timing |
👍 |
| reti timing |
👍 |
| reti intr timing |
👍 |
| rst timing |
👍 |
Bits (unusable bits in memory and registers)
| Test |
Boy |
| mem oam |
👍 |
| reg f |
👍 |
| unused_hwio GS |
👍 |
| Test |
Boy |
| basic |
👍 |
| reg_read |
👍 |
| sources dmgABCmgbS |
❌ |
| Test |
Boy |
| hblank ly scx timing GS |
❌ |
| intr 1 2 timing GS |
👍 |
| intr 2 0 timing |
👍 |
| intr 2 mode0 timing |
👍 |
| intr 2 mode3 timing |
👍 |
| intr 2 oam ok timing |
👍 |
| intr 2 mode0 timing sprites |
❌ |
| lcdon timing dmgABCmgbS |
👍 |
| lcdon write timing GS |
👍 |
| stat irq blocking |
❌ |
| stat lyc onoff |
❌ |
| vblank stat intr GS |
👍 |
| Test |
Boy |
| boot sclk align dmgABCmgb |
❌ |
| Test |
Boy |
| div write |
👍 |
| rapid toggle |
👍 |
| tim00 div trigger |
👍 |
| tim00 |
👍 |
| tim01 div trigger |
👍 |
| tim01 |
👍 |
| tim10 div trigger |
👍 |
| tim10 |
👍 |
| tim11 div trigger |
👍 |
| tim11 |
👍 |
| tima reload |
👍 |
| tima write reloading |
❌ |
| tma write reloading |
❌ |
Mooneye GB emulator-only tests
| Test |
Boy |
| bits ram en |
👍 |
| rom 512Kb |
👍 |
| rom 1Mb |
👍 |
| rom 2Mb |
👍 |
| rom 4Mb |
👍 |
| rom 8Mb |
👍 |
| rom 16Mb |
👍 |
| ram 64Kb |
👍 |
| ram 256Kb |
👍 |
| multicart rom 8Mb |
❌ |
| Test |
Boy |
| sprite priority |
👍 |
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