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rx78:

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- fixed colours, keyboard and cart loading to allow the new carts to work. [Robbbert]
- fixed loading of real tapes [Haze]
This commit is contained in:
Robbbert 2021-01-11 03:00:00 +11:00
parent 4d1d2e4f68
commit 06b26a0f55
1 changed files with 46 additions and 49 deletions
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95
src/mame/drivers/rx78.cpp
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@ -8,8 +8,9 @@ Driver by Angelo Salese & Robbbert.
TODO:
- implement printer;
- Challenge Golf: has gfx and (possible) input bugs;
- Colours are incorrect
- Colours are incorrect? Not really sure until we can get more carts
- Implement 2nd cart slot
- Keyboard works in all scenarios, but it is a guess.
Notes:
- BS-BASIC v1.0 notes:
@ -123,18 +124,23 @@ void rx78_state::cass_w(u8 data)
u8 rx78_state::cass_r()
{
return (m_cass->input() > 0.03);
return (m_cass->input() > 0.03) ? 0 : 1;
}
uint32_t rx78_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
int color,pen[3];
const int borderx = 32, bordery = 20;
u8 color;
bool pen[3];
const u8 borderx = 32, bordery = 20;
bitmap.fill(16, cliprect);
int count = 0x2c0; //first 0x2bf bytes aren't used for bitmap drawing apparently
u16 count = 0x2c0; //first 0x2bf bytes aren't used for bitmap drawing apparently
u8 pri_mask = m_pri_mask;
if (m_pal_reg[6])
pri_mask &= m_pal_reg[6]; // this gives blue sky in Challenge Golf - colours to be checked on carts as they are dumped
for(u8 y=0; y<184; y++)
{
@ -143,27 +149,21 @@ uint32_t rx78_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap,
for (u8 i = 0; i < 8; i++)
{
/* bg color */
pen[0] = (m_pri_mask & 0x08) ? (m_vram[count + 0x6000] >> (i)) : 0x00;
pen[1] = (m_pri_mask & 0x10) ? (m_vram[count + 0x8000] >> (i)) : 0x00;
pen[2] = (m_pri_mask & 0x20) ? (m_vram[count + 0xa000] >> (i)) : 0x00;
pen[0] = BIT(m_pri_mask, 3) ? BIT(m_vram[count + 0x6000], i) : 0;
pen[1] = BIT(m_pri_mask, 4) ? BIT(m_vram[count + 0x8000], i) : 0;
pen[2] = BIT(m_pri_mask, 5) ? BIT(m_vram[count + 0xa000], i) : 0;
color = ((pen[0] & 1) << 0);
color |= ((pen[1] & 1) << 1);
color |= ((pen[2] & 1) << 2);
if(color)
color = pen[0] | (pen[1] << 1) | (pen[2] << 2);
if (color)
bitmap.pix(y+bordery, x+i+borderx) = color | 8;
/* fg color */
pen[0] = (m_pri_mask & 0x01) ? (m_vram[count + 0x0000] >> (i)) : 0x00;
pen[1] = (m_pri_mask & 0x02) ? (m_vram[count + 0x2000] >> (i)) : 0x00;
pen[2] = (m_pri_mask & 0x04) ? (m_vram[count + 0x4000] >> (i)) : 0x00;
pen[0] = BIT(pri_mask, 0) ? BIT(m_vram[count + 0x0000], i) : 0;
pen[1] = BIT(pri_mask, 1) ? BIT(m_vram[count + 0x2000], i) : 0;
pen[2] = BIT(pri_mask, 2) ? BIT(m_vram[count + 0x4000], i) : 0;
color = ((pen[0] & 1) << 0);
color |= ((pen[1] & 1) << 1);
color |= ((pen[2] & 1) << 2);
if(color)
color = pen[0] | (pen[1] << 1) | (pen[2] << 2);
if (color)
bitmap.pix(y+bordery, x+i+borderx) = color;
}
count++;
@ -181,19 +181,14 @@ u8 rx78_state::key_r()
"KEY8", "JOY1P_0","JOY1P_1","JOY1P_2",
"JOY2P_0", "JOY2P_1", "JOY2P_2", "UNUSED" };
if(m_key_mux == 0x30) //status read
{
u8 res = 0;
for(u8 i=0; i<15; i++)
res |= ioport(keynames[i])->read();
return res;
}
if(m_key_mux >= 1 && m_key_mux <= 15)
return ioport(keynames[m_key_mux - 1])->read();
return 0;
u8 res = 0;
for(u8 i=0; i<15; i++)
res |= ioport(keynames[i])->read();
return res;
}
void rx78_state::key_w(u8 data)
@ -228,19 +223,17 @@ void rx78_state::vram_write_bank_w(u8 data)
void rx78_state::vdp_reg_w(offs_t offset, u8 data)
{
u8 r,g,b,res,i;
m_pal_reg[offset] = data;
for(i=0;i<16;i++)
for(u8 i = 0; i < 16; i++)
{
res = ((i & 1) ? m_pal_reg[0 + (i & 8 ? 3 : 0)] : 0) | ((i & 2) ? m_pal_reg[1 + (i & 8 ? 3 : 0)] : 0) | ((i & 4) ? m_pal_reg[2 + (i & 8 ? 3 : 0)] : 0);
if(res & m_pal_reg[6]) //color mask, TODO: check this
res &= m_pal_reg[6];
u8 res = (BIT(i, 0) ? m_pal_reg[0 + (BIT(i, 3) ? 3 : 0)] : 0)
|(BIT(i, 1) ? m_pal_reg[1 + (BIT(i, 3) ? 3 : 0)] : 0)
|(BIT(i, 2) ? m_pal_reg[2 + (BIT(i, 3) ? 3 : 0)] : 0);
r = (res & 0x11) == 0x11 ? 0xff : ((res & 0x11) == 0x01 ? 0x7f : 0x00);
g = (res & 0x22) == 0x22 ? 0xff : ((res & 0x22) == 0x02 ? 0x7f : 0x00);
b = (res & 0x44) == 0x44 ? 0xff : ((res & 0x44) == 0x04 ? 0x7f : 0x00);
u8 r = (res & 0x11) == 0x11 ? 0xff : ((res & 0x11) == 0x01 ? 0x7f : 0);
u8 g = (res & 0x22) == 0x22 ? 0xff : ((res & 0x22) == 0x02 ? 0x7f : 0);
u8 b = (res & 0x44) == 0x44 ? 0xff : ((res & 0x44) == 0x04 ? 0x7f : 0);
m_palette->set_pen_color(i, rgb_t(r,g,b));
}
@ -248,13 +241,11 @@ void rx78_state::vdp_reg_w(offs_t offset, u8 data)
void rx78_state::vdp_bg_reg_w(u8 data)
{
int r,g,b;
u8 r = (data & 0x11) == 0x11 ? 0xff : ((data & 0x11) == 0x01 ? 0x7f : 0);
u8 g = (data & 0x22) == 0x22 ? 0xff : ((data & 0x22) == 0x02 ? 0x7f : 0);
u8 b = (data & 0x44) == 0x44 ? 0xff : ((data & 0x44) == 0x04 ? 0x7f : 0);
r = (data & 0x11) == 0x11 ? 0xff : ((data & 0x11) == 0x01 ? 0x7f : 0x00);
g = (data & 0x22) == 0x22 ? 0xff : ((data & 0x22) == 0x02 ? 0x7f : 0x00);
b = (data & 0x44) == 0x44 ? 0xff : ((data & 0x44) == 0x04 ? 0x7f : 0x00);
m_palette->set_pen_color(0x10, rgb_t(r,g,b));
m_palette->set_pen_color(16, rgb_t(r,g,b));
}
void rx78_state::vdp_pri_mask_w(u8 data)
@ -420,7 +411,13 @@ void rx78_state::machine_reset()
{
address_space &prg = m_maincpu->space(AS_PROGRAM);
if (m_cart->exists())
prg.install_read_handler(0x2000, 0x5fff, read8sm_delegate(*m_cart, FUNC(generic_slot_device::read_rom)));
{
u32 size = m_cart->common_get_size("rom");
if (size > 0x9000)
size = 0x9000;
if (size)
prg.install_read_handler(0x2000, size+0x1FFF, read8sm_delegate(*m_cart, FUNC(generic_slot_device::read_rom)));
}
}
void rx78_state::machine_start()
@ -438,7 +435,7 @@ DEVICE_IMAGE_LOAD_MEMBER( rx78_state::cart_load )
{
u32 size = m_cart->common_get_size("rom");
if (size != 0x2000 && size != 0x4000)
if (size != 0x2000 && size != 0x4000 && size != 0x8000)
{
image.seterror(IMAGE_ERROR_UNSPECIFIED, "Unsupported cartridge size");
return image_init_result::FAIL;