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amiga/amiga_m.cpp: misc popmessages aimed at AGA unsupported stuff

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This commit is contained in:
angelosa 2025-01-26 18:08:42 +01:00
parent 17b5a49a59
commit 3c0a92e485
2 changed files with 32 additions and 0 deletions
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3
src/mame/amiga/amiga.h
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@ -628,6 +628,9 @@ protected:
void bplcon0_w(u16 data);
void aga_bplcon0_w(u16 data);
// TODO: move to Lisa
void clxcon2_w(u16 data);
private:
// blitter helpers
uint32_t blit_ascending();

29
src/mame/amiga/amiga_m.cpp
View File

@ -1227,6 +1227,8 @@ void amiga_state::aga_map(address_map &map)
map(0x100, 0x101).w(FUNC(amiga_state::aga_bplcon0_w));
map(0x10e, 0x10f).w(FUNC(amiga_state::clxcon2_w));
// UHRES regs
// TODO: may be shared with ECS?
// map(0x1e6, 0x1e7).w(FUNC(amiga_state::bplhmod_w));
@ -1290,12 +1292,39 @@ void amiga_state::bplcon0_w(u16 data)
CUSTOM_REG(REG_BPLCON0) = data;
}
/*
* http://amiga-dev.wikidot.com/hardware:bplcon0
*/
void amiga_state::aga_bplcon0_w(u16 data)
{
// just allow all (AGA surfninj title screen relies on this)
CUSTOM_REG(REG_BPLCON0) = data;
// TODO: planes > 8
// Should be easy to fix, this checks if anything violates the rule first.
if (BIT(data, 4) && data & 0x7000)
popmessage("BPLCON0 illegal BPU plane mask %04x", data);
// TODO: unsupported stuff
if (data & 0x00e0)
{
popmessage("BPLCON0 unsupported %04x %s%s%s",
data,
BIT(data, 7) ? "UHRES|" : "",
BIT(data, 6) ? "SHRES|" : "",
BIT(data, 5) ? "BYPASS" : ""
);
}
}
/*
* http://amiga-dev.wikidot.com/hardware:clxcon2
*/
void amiga_state::clxcon2_w(u16 data)
{
// TODO: enables bitplane 7-8 collision detection, resets to 0 if CLXCON write happens
popmessage("CLXCON2 %04x", data);
}
// TODO: progressively remove functions from here
uint16_t amiga_state::custom_chip_r(offs_t offset)
{
uint16_t temp;