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canons80: Hook up LCDC and some RAM; work around undumped internal ROM this most likely boots from (nw)

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This commit is contained in:
AJR 2020-03-12 23:13:47 -04:00
parent 4499f5f6bc
commit edd08a30a4
1 changed files with 40 additions and 7 deletions
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47
src/mame/drivers/canon_s80.cpp
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@ -11,14 +11,15 @@
* known issues:
* - memory-map is uncertain
* - maincpu clock is guessed
* - still need to hookup the Hitachi HD44780 LCD Controller
* - still lacks description of the keyboard inputs
* - as well as a "paper" device to plot the output of the dot matrix print head
*/
#include "emu.h"
#include "cpu/m6800/m6801.h"
//#include "video/hd44780.h"
#include "video/hd44780.h"
#include "emupal.h"
#include "screen.h"
class canons80_state : public driver_device
{
@ -27,16 +28,30 @@ public:
: driver_device(mconfig, type, tag)
{ }
void init_canons80();
void canons80(machine_config &config);
void init_canons80();
private:
HD44780_PIXEL_UPDATE(pixel_update);
void canons80_map(address_map &map);
};
HD44780_PIXEL_UPDATE(canons80_state::pixel_update)
{
if (pos < 16)
bitmap.pix16(line * 8 + y, pos * 6 + x) = state;
}
void canons80_state::canons80_map(address_map &map)
{
map(0x0000, 0x7fff).ram();
map(0x8000, 0xffff).rom();
map(0x0000, 0x001f).m("maincpu", FUNC(hd6301x0_cpu_device::m6801_io));
map(0x0040, 0x00ff).ram();
map(0x0100, 0x07ff).ram();
map(0x2000, 0x2001).rw("lcdc", FUNC(hd44780_device::read), FUNC(hd44780_device::write));
map(0x4000, 0x7fff).rom().region("external", 0x4000);
map(0xf000, 0xffff).rom().region("maincpu", 0);
}
void canons80_state::canons80(machine_config &config)
@ -44,6 +59,19 @@ void canons80_state::canons80(machine_config &config)
/* basic machine hardware */
hd6301x0_cpu_device &maincpu(HD6301X0(config, "maincpu", 5000000)); /* hd63a01xop 5 MHz guessed: TODO: check on PCB */
maincpu.set_addrmap(AS_PROGRAM, &canons80_state::canons80_map);
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD));
screen.set_refresh_hz(50);
screen.set_screen_update("lcdc", FUNC(hd44780_device::screen_update));
screen.set_size(16*6, 16);
screen.set_visarea(0, 16*6-1, 0, 16-1);
screen.set_palette("palette");
hd44780_device &hd44780(HD44780(config, "lcdc"));
hd44780.set_lcd_size(2, 16);
hd44780.set_pixel_update_cb(FUNC(canons80_state::pixel_update));
PALETTE(config, "palette").set_entries(2);
}
void canons80_state::init_canons80()
@ -51,8 +79,13 @@ void canons80_state::init_canons80()
}
ROM_START( canons80 )
ROM_REGION( 0x10000, "maincpu", 0 ) /* 6800 code */
ROM_LOAD( "canon_8735kx_nh4-0029_064.ic6", 0x8000, 0x8000, CRC(b6cd2ff7) SHA1(e47a136300c826e480fac1be7fc090523078a2a6) )
ROM_REGION( 0x1000, "maincpu", 0 )
ROM_LOAD( "hd63a1x0p.bin", 0x0000, 0x1000, NO_DUMP )
ROM_FILL( 0xffe, 1, 0x40 )
ROM_FILL( 0xfff, 1, 0x00 )
ROM_REGION( 0x8000, "external", 0 )
ROM_LOAD( "canon_8735kx_nh4-0029_064.ic6", 0x0000, 0x8000, CRC(b6cd2ff7) SHA1(e47a136300c826e480fac1be7fc090523078a2a6) )
ROM_END
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */