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kiwako/jongkyo.cpp: add notes about $4x area, demote to MACHINE_UNEMULATED_PROTECTION

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Angelo Salese 2023-11-16 15:05:07 +01:00 committed by GitHub
parent cc4df32ff6
commit 569b37f319
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1 changed files with 7 additions and 1 deletions
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src/mame/kiwako/jongkyo.cpp
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@ -207,6 +207,12 @@ void jongkyo_state::videoram2_w(offs_t offset, uint8_t data)
m_videoram2[offset] = data;
}
// TODO: this actually looks some kind of memory space protection device, probably tied internally in the 315-5084 (unique for this game) within $4x
// $4d - $4e HL (source?)
// $46 trigger strobe?
// $40 reads (val & 0xf) != 0xa, writes 0x1 to RAM $7530 (buffer?), 0 otherwise
// $4c - $4f DE (VRAM bank destination?)
// $46 writes 0 or 1 depending on $7530 above
void jongkyo_state::unknown_w(offs_t offset, uint8_t data)
{
switch (offset)
@ -584,4 +590,4 @@ void jongkyo_state::init_jongkyo()
*
*************************************/
GAME( 1985, jongkyo, 0, jongkyo, jongkyo, jongkyo_state, init_jongkyo, ROT0, "Kiwako", "Jongkyo", MACHINE_WRONG_COLORS | MACHINE_SUPPORTS_SAVE )
GAME( 1985, jongkyo, 0, jongkyo, jongkyo, jongkyo_state, init_jongkyo, ROT0, "Kiwako", "Jongkyo", MACHINE_IMPERFECT_COLORS | MACHINE_UNEMULATED_PROTECTION | MACHINE_SUPPORTS_SAVE )