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st2204: Create ST2202 variant type and downgrade dyndesk to it (nw)

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This commit is contained in:
AJR 2019-11-05 21:46:50 -05:00
parent d502e18d24
commit ed5201ed3e
3 changed files with 67 additions and 20 deletions
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64
src/devices/cpu/m6502/st2204.cpp
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@ -2,6 +2,7 @@
// copyright-holders:AJR
/**********************************************************************
Sitronix ST2202 8-Bit Integrated Microcontroller
Sitronix ST2204 8-Bit Integrated Microcontroller
Functional blocks:
@ -10,18 +11,23 @@
* External bus (up to 7 CS outputs, 48M maximum addressable)
* Timers/event counters with clocking outputs (2 plus base timer)
* Programmable sound generator (2 channels plus DAC)
* LCD controller (320x240 B/W or 240x160 4-gray)
* LCD controller (ST2202: 240x120 B/W, software gray levels)
(ST2204: 320x240 B/W or 240x160 4-gray)
* Serial peripheral interface
* UART (built-in BRG; RS-232 and IrDA modes)
* Direct memory access (1 channel)
* Power down modes (WAI-0, WAI-1, STP)
* Watchdog timer
* Low voltage detector
* 512K ROM (may be disabled)
* 10K RAM
* 256K (ST2202) or 512K (ST2204) ROM (may be disabled)
* 4K (ST2202) or 10K (ST2204) RAM
Emulation is largely based on documentation for the ST2202, which
has similar though somewhat lesser capabilities.
Emulation is largely based on documentation for the ST2202. The
ST2204 is believed to be almost entirely backward compatible.
Two versions of the ST2204 were manufactured: ST2204A, fabricated
by TSMC, and ST2204B, fabricated by Hyundai. A PDF document
describing the differences between these two was once available.
Reverse-engineered documentation for SS2204's internal registers:
http://blog.kevtris.org/blogfiles/Game%20King%20Inside.txt
@ -31,13 +37,11 @@
#include "emu.h"
#include "st2204.h"
DEFINE_DEVICE_TYPE(ST2202, st2202_device, "st2202", "Sitronix ST2202 Integrated Microcontroller")
DEFINE_DEVICE_TYPE(ST2204, st2204_device, "st2204", "Sitronix ST2204 Integrated Microcontroller")
st2204_device::st2204_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: st2xxx_device(mconfig, ST2204, tag, owner, clock,
address_map_constructor(FUNC(st2204_device::int_map), this),
26, // logical; only 23 address lines are brought out
false)
st2204_device::st2204_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, address_map_constructor map)
: st2xxx_device(mconfig, type, tag, owner, clock, map, 26, false) // logical; only 23 address lines are brought out
, m_tmode{0}
, m_tcntr{0}
, m_dms(0)
@ -46,6 +50,16 @@ st2204_device::st2204_device(const machine_config &mconfig, const char *tag, dev
{
}
st2204_device::st2204_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: st2204_device(mconfig, ST2204, tag, owner, clock, address_map_constructor(FUNC(st2204_device::int_map), this))
{
}
st2202_device::st2202_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: st2204_device(mconfig, ST2202, tag, owner, clock, address_map_constructor(FUNC(st2202_device::int_map), this))
{
}
void st2204_device::device_start()
{
std::unique_ptr<mi_st2204> intf = std::make_unique<mi_st2204>();
@ -352,7 +366,7 @@ void st2204_device::dmem_w(offs_t offset, u8 data)
downcast<mi_st2204 &>(*mintf).dwrite(offset, data);
}
void st2204_device::int_map(address_map &map)
void st2204_device::common_map(address_map &map)
{
map(0x0000, 0x0004).rw(FUNC(st2204_device::pdata_r), FUNC(st2204_device::pdata_w));
map(0x0005, 0x0005).rw(FUNC(st2204_device::psc_r), FUNC(st2204_device::psc_w));
@ -366,11 +380,10 @@ void st2204_device::int_map(address_map &map)
map(0x0025, 0x0025).rw(FUNC(st2204_device::t0c_r), FUNC(st2204_device::t0c_w));
map(0x0026, 0x0026).rw(FUNC(st2204_device::t1m_r), FUNC(st2204_device::t1m_w));
map(0x0027, 0x0027).rw(FUNC(st2204_device::t1c_r), FUNC(st2204_device::t1c_w));
// Source/destination registers are not readable on ST2202, but may be readable here (count register isn't)
map(0x0028, 0x0028).rw(FUNC(st2204_device::dmsl_r), FUNC(st2204_device::dmsl_w));
map(0x0029, 0x0029).rw(FUNC(st2204_device::dmsh_r), FUNC(st2204_device::dmsh_w));
map(0x002a, 0x002a).rw(FUNC(st2204_device::dmdl_r), FUNC(st2204_device::dmdl_w));
map(0x002b, 0x002b).rw(FUNC(st2204_device::dmdh_r), FUNC(st2204_device::dmdh_w));
map(0x0028, 0x0028).w(FUNC(st2204_device::dmsl_w));
map(0x0029, 0x0029).w(FUNC(st2204_device::dmsh_w));
map(0x002a, 0x002a).w(FUNC(st2204_device::dmdl_w));
map(0x002b, 0x002b).w(FUNC(st2204_device::dmdh_w));
map(0x002c, 0x002c).w(FUNC(st2204_device::dcntl_w));
map(0x002d, 0x002d).w(FUNC(st2204_device::dcnth_w));
map(0x0030, 0x0030).rw(FUNC(st2204_device::sys_r), FUNC(st2204_device::sys_w));
@ -398,8 +411,23 @@ void st2204_device::int_map(address_map &map)
map(0x004a, 0x004a).rw(FUNC(st2204_device::lac_r), FUNC(st2204_device::lac_w));
map(0x004b, 0x004b).rw(FUNC(st2204_device::lpwm_r), FUNC(st2204_device::lpwm_w));
map(0x004c, 0x004c).rw(FUNC(st2204_device::pl_r), FUNC(st2204_device::pl_w));
map(0x004e, 0x004e).w(FUNC(st2204_device::pcl_w));
map(0x0080, 0x287f).ram(); // 2800-287F possibly not present in earlier versions
// PCL is listed as write-only in ST2202 specification, but DynamiDesk suggests otherwise
map(0x004e, 0x004e).rw(FUNC(st2204_device::pcl_r), FUNC(st2204_device::pcl_w));
map(0x4000, 0x7fff).rw(FUNC(st2204_device::pmem_r), FUNC(st2204_device::pmem_w));
map(0x8000, 0xffff).rw(FUNC(st2204_device::dmem_r), FUNC(st2204_device::dmem_w));
}
void st2202_device::int_map(address_map &map)
{ common_map(map);
map(0x0080, 0x0fff).ram(); }
void st2204_device::int_map(address_map &map)
{
common_map(map);
// Source/destination registers are supposedly not readable on ST2202, but may be readable here (count register isn't)
map(0x0028, 0x0028).r(FUNC(st2204_device::dmsl_r));
map(0x0029, 0x0029).r(FUNC(st2204_device::dmsh_r));
map(0x002a, 0x002a).r(FUNC(st2204_device::dmdl_r));
map(0x002b, 0x002b).r(FUNC(st2204_device::dmdh_r));
map(0x0080, 0x287f).ram(); // 2800-287F possibly not present in earlier versions
}

19
src/devices/cpu/m6502/st2204.h
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@ -2,6 +2,7 @@
// copyright-holders:AJR
/**********************************************************************
Sitronix ST2202 8-Bit Integrated Microcontroller
Sitronix ST2204 8-Bit Integrated Microcontroller
**********************************************************************/
@ -28,6 +29,8 @@ public:
st2204_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
protected:
st2204_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, address_map_constructor int_map);
virtual void device_start() override;
virtual void device_reset() override;
@ -42,6 +45,8 @@ protected:
virtual u8 st2xxx_lckr_mask() const override { return 0x1f; }
virtual u8 st2xxx_lpwm_mask() const override { return 0x3f; }
void common_map(address_map &map);
private:
class mi_st2204 : public mi_st2xxx {
public:
@ -95,6 +100,20 @@ private:
u8 m_dcnth;
};
class st2202_device : public st2204_device
{
public:
st2202_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
protected:
virtual u8 st2xxx_misc_mask() const override { return 0x0f; }
virtual u8 st2xxx_lctr_mask() const override { return 0xe0; }
private:
void int_map(address_map &map);
};
DECLARE_DEVICE_TYPE(ST2202, st2202_device)
DECLARE_DEVICE_TYPE(ST2204, st2204_device)
#endif // MAME_MACHINE_M6502_ST2204_H

4
src/mame/drivers/inteladv.cpp
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@ -45,13 +45,13 @@ INPUT_PORTS_END
void inteladv_state::inteladv(machine_config &config)
{
ST2205U(config, m_maincpu, 32768 * 122);
ST2205U(config, m_maincpu, 4000000);
m_maincpu->set_addrmap(AS_DATA, &inteladv_state::inteladv_map);
}
void inteladv_state::dyndesk(machine_config &config)
{
ST2204(config, m_maincpu, 32768 * 122);
ST2202(config, m_maincpu, 4000000);
m_maincpu->set_addrmap(AS_DATA, &inteladv_state::dyndesk_map);
}