diff options
Diffstat (limited to 'src/devices/cpu/m6502/st2204.cpp')
-rw-r--r-- | src/devices/cpu/m6502/st2204.cpp | 407 |
1 files changed, 266 insertions, 141 deletions
diff --git a/src/devices/cpu/m6502/st2204.cpp b/src/devices/cpu/m6502/st2204.cpp index 3a6c794ba8b..829ff74ac08 100644 --- a/src/devices/cpu/m6502/st2204.cpp +++ b/src/devices/cpu/m6502/st2204.cpp @@ -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 @@ -31,28 +37,31 @@ #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 - 0x0f7f) - , m_bten(0) - , m_btsr(0) - , m_base_timer{0} +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_tload{0} + , m_timer{0} + , m_psg{0} + , m_psgc(0) , m_dms(0) , m_dmd(0) , m_dcnth(0) { } -template<int N> -TIMER_CALLBACK_MEMBER(st2204_device::bt_interrupt) +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)) { - m_btsr |= 1 << N; - m_ireq |= 0x020; - update_irq_state(); } void st2204_device::device_start() @@ -67,62 +76,67 @@ void st2204_device::device_start() intf->dmr = 0; intf->irq_service = false; - m_base_timer[0] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2204_device::bt_interrupt<0>), this)); - m_base_timer[1] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2204_device::bt_interrupt<1>), this)); - m_base_timer[2] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2204_device::bt_interrupt<2>), this)); - m_base_timer[3] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2204_device::bt_interrupt<3>), this)); - m_base_timer[4] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2204_device::bt_interrupt<4>), this)); - - save_item(NAME(m_pdata)); - save_item(NAME(m_pctrl)); - save_item(NAME(m_psel)); - save_item(NAME(m_pfun)); - save_item(NAME(m_bten)); - save_item(NAME(m_btsr)); + init_base_timer(0x0020); + init_lcd_timer(0x0040); + + m_timer[0] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2204_device::t0_interrupt), this)); + m_timer[1] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2204_device::t1_interrupt), this)); + + save_item(NAME(m_tmode)); + save_item(NAME(m_tcntr)); + save_item(NAME(m_tload)); + save_item(NAME(m_psg)); + save_item(NAME(m_psgc)); save_item(NAME(m_dms)); save_item(NAME(m_dmd)); save_item(NAME(m_dcnth)); - save_item(NAME(m_sys)); - save_item(NAME(m_pmcr)); - save_item(NAME(m_ireq)); - save_item(NAME(m_iena)); - save_item(NAME(m_lssa)); - save_item(NAME(m_lvpw)); - save_item(NAME(m_lxmax)); - save_item(NAME(m_lymax)); - save_item(NAME(intf->irr_enable)); - save_item(NAME(intf->irr)); - save_item(NAME(intf->prr)); - save_item(NAME(intf->drr)); - save_item(NAME(intf->irq_service)); mintf = std::move(intf); + save_common_registers(); init(); state_add(ST_IRR, "IRR", downcast<mi_st2204 &>(*mintf).irr).mask(0xff); state_add(ST_PRR, "PRR", downcast<mi_st2204 &>(*mintf).prr).mask(0xfff); state_add(ST_DRR, "DRR", downcast<mi_st2204 &>(*mintf).drr).mask(0x7ff); - state_add<u8>(ST_IREQ, "IREQ", [this]() { return m_ireq; }, [this](u16 data) { m_ireq = data; update_irq_state(); }).mask(m_ireq_mask); - state_add<u8>(ST_IENA, "IENA", [this]() { return m_iena; }, [this](u16 data) { m_iena = data; update_irq_state(); }).mask(m_ireq_mask); + state_add<u16>(ST_IREQ, "IREQ", [this]() { return m_ireq; }, [this](u16 data) { m_ireq = data; update_irq_state(); }).mask(st2xxx_ireq_mask()); + state_add<u16>(ST_IENA, "IENA", [this]() { return m_iena; }, [this](u16 data) { m_iena = data; update_irq_state(); }).mask(st2xxx_ireq_mask()); for (int i = 0; i < 5; i++) { - state_add(ST_PDA + i, string_format("PD%c", 'A' + i).c_str(), m_pdata[i]); + state_add(ST_PAOUT + i, string_format("P%cOUT", 'A' + i).c_str(), m_pdata[i]); state_add(ST_PCA + i, string_format("PC%c", 'A' + i).c_str(), m_pctrl[i]); if (i == 2) state_add(ST_PSA + i, string_format("PS%c", 'A' + i).c_str(), m_psel[i]); if (i == 2 || i == 3) state_add(ST_PFC + i - 2, string_format("PF%c", 'A' + i).c_str(), m_pfun[i - 2]); } - state_add(ST_PDL, "PDL", m_pdata[6]); + state_add(ST_PLOUT, "PLOUT", m_pdata[6]); state_add(ST_PCL, "PCL", m_pctrl[6]); state_add(ST_PMCR, "PMCR", m_pmcr); + state_add<u8>(ST_PRS, "PRS", [this]() { return m_prs; }, [this](u8 data) { prs_w(data); }).mask(0x60); state_add<u8>(ST_BTEN, "BTEN", [this]() { return m_bten; }, [this](u8 data) { bten_w(data); }).mask(0x1f); state_add(ST_BTSR, "BTSR", m_btsr).mask(0x1f); + state_add(ST_T0M, "T0M", m_tmode[0]).mask(0x37); + state_add(ST_T0C, "T0C", m_tload[0]); + state_add(ST_T1M, "T1M", m_tmode[1]).mask(0x1f); + state_add(ST_T1C, "T1C", m_tload[1]); + state_add(ST_PSG0, "PSG0", m_psg[0]).mask(0xfff); + state_add(ST_PSG1, "PSG1", m_psg[1]).mask(0xfff); + state_add(ST_PSGC, "PSGC", m_psgc).mask(0x7f); state_add<u8>(ST_SYS, "SYS", [this]() { return m_sys; }, [this](u8 data) { sys_w(data); }); + state_add(ST_MISC, "MISC", m_misc).mask(st2xxx_misc_mask()); state_add(ST_LSSA, "LSSA", m_lssa); state_add(ST_LVPW, "LVPW", m_lvpw); state_add(ST_LXMAX, "LXMAX", m_lxmax); state_add(ST_LYMAX, "LYMAX", m_lymax); + state_add(ST_LPAN, "LPAN", m_lpan).mask(st2xxx_lpan_mask()); + state_add(ST_LCTR, "LCTR", m_lctr).mask(st2xxx_lctr_mask()); + state_add(ST_LCKR, "LCKR", m_lckr).mask(st2xxx_lckr_mask()); + state_add(ST_LFRA, "LFRA", m_lfra).mask(0x3f); + state_add(ST_LAC, "LAC", m_lac).mask(0x1f); + state_add(ST_LPWM, "LPWM", m_lpwm).mask(st2xxx_lpwm_mask()); + state_add(ST_BCTR, "BCTR", m_bctr).mask(0x87); + state_add(ST_BRS, "BRS", m_brs); + state_add(ST_BDIV, "BDIV", m_bdiv); state_add(ST_DMS, "DMS", m_dms); state_add(ST_DMR, "DMR", downcast<mi_st2204 &>(*mintf).dmr).mask(0x7ff); state_add(ST_DMD, "DMD", m_dmd); @@ -132,15 +146,33 @@ void st2204_device::device_reset() { st2xxx_device::device_reset(); - mi_st2204 &m = downcast<mi_st2204 &>(*mintf); - m.irr_enable = false; - m.irr = 0; - m.prr = 0; - m.drr = 0; - m.dmr = 0; + m_tmode[0] = m_tmode[1] = 0; + m_tcntr[0] = m_tcntr[1] = 0; + m_tload[0] = m_tload[1] = 0; + m_timer[0]->adjust(attotime::never); + m_timer[1]->adjust(attotime::never); - bten_w(0); - m_btsr = 0; + m_psg[0] = m_psg[1] = 0; + m_psgc = 0; +} + +const char *st2204_device::st2xxx_irq_name(int i) const +{ + switch (i) + { + case 0: return "PC0 edge"; + case 1: return "DAC reload"; + case 2: return "Timer 0"; + case 3: return "Timer 1"; + case 4: return "PA transition"; + case 5: return "Base timer"; + case 6: return "LCD frame"; + case 8: return "SPI TX empty"; + case 9: return "SPI RX ready"; + case 10: return "UART TX"; + case 11: return "UART RX"; + default: return "Reserved"; + } } u8 st2204_device::mi_st2204::pread(u16 adr) @@ -209,113 +241,194 @@ void st2204_device::mi_st2204::write(u16 adr, u8 val) program->write_byte(adr, val); } -u8 st2204_device::pmcr_r() +unsigned st2204_device::st2xxx_bt_divider(int n) const { - return m_pmcr; + // 2 Hz, 8 Hz, 64 Hz, 256 Hz, 2048 Hz + if (n < 5) + return 16384 >> ((n & 1) * 2 + (n >> 1) * 5); + else + return 0; } -void st2204_device::pmcr_w(u8 data) +TIMER_CALLBACK_MEMBER(st2204_device::t0_interrupt) { - m_pmcr = data; + m_ireq |= 0x004; + update_irq_state(); + + // Bit 4 allows auto-reload + m_tcntr[0] = BIT(m_tmode[0], 4) ? m_tload[0] : 0; + m_timer[0]->adjust(cycles_to_attotime((256 - m_tcntr[0]) * tclk_pres_div(m_tmode[0] & 0x07))); } -u8 st2204_device::bten_r() +TIMER_CALLBACK_MEMBER(st2204_device::t1_interrupt) { - return m_bten; + m_ireq |= 0x008; + update_irq_state(); + + // Bit 4 allows auto-reload + m_tcntr[1] = BIT(m_tmode[1], 4) ? m_tload[1] : 0; + if (!BIT(m_tmode[1], 3)) + m_timer[1]->adjust(cycles_to_attotime((256 - m_tcntr[1]) * tclk_pres_div(m_tmode[1] & 0x07))); + else if ((m_tmode[1] & 0x07) < 3) + t1_start_from_oscx(); } -void st2204_device::bten_w(u8 data) +void st2204_device::timer_start_from_tclk(int t) { - for (int n = 0; n < 5; n++) - { - if (BIT(data, n) && !BIT(m_bten, n)) - { - // 2 Hz, 8 Hz, 64 Hz, 256 Hz, 2048 Hz - attotime period = attotime::from_hz(2 << ((n & 1) * 2 + (n >> 1) * 5)); - m_base_timer[n]->adjust(period, 0, period); - } - else if (!BIT(data, n) && BIT(m_bten, n)) - m_base_timer[n]->adjust(attotime::never); - } + u32 div = tclk_pres_div(m_tmode[t] & 0x07); + m_timer[t]->adjust(cycles_to_attotime((255 - m_tcntr[t]) * div + div - (pres_count() & (div - 1)))); +} - m_bten = data & 0x1f; +void st2204_device::t1_start_from_oscx() +{ + u32 div = 256 >> (m_tmode[1] & 0x03); + m_timer[1]->adjust(attotime::from_ticks(div, 32768)); } -u8 st2204_device::btsr_r() +u8 st2204_device::t0m_r() { - return m_btsr; + return m_tmode[0]; } -void st2204_device::btsr_w(u8 data) +void st2204_device::t0m_w(u8 data) { - // Only bit 7 has any effect - if (BIT(data, 7)) - m_btsr = 0; + u8 t0m_old = std::exchange(m_tmode[0], data & 0x37); + + if ((data & 0x27) != (t0m_old & 0x27) && (m_prs & 0x60) == 0x40) + { + // forced update + m_tcntr[0] = t0c_r(); + + if (BIT(data, 5)) + timer_start_from_tclk(0); + else if (BIT(t0m_old, 5)) + m_timer[0]->adjust(attotime::never); + } } -u8 st2204_device::sys_r() +u8 st2204_device::t0c_r() { - return m_sys | 0x01; + if ((m_prs & 0x60) != 0x40 || !BIT(m_tmode[0], 5)) + return m_tcntr[0]; + else + { + u32 div = tclk_pres_div(m_tmode[0] & 0x07); + return 255 - u8(attotime_to_cycles(m_timer[0]->remaining()) / div); + } } -void st2204_device::sys_w(u8 data) +void st2204_device::t0c_w(u8 data) { - m_sys = data; - downcast<mi_st2204 &>(*mintf).irr_enable = BIT(data, 1); + m_tcntr[0] = m_tload[0] = data; + if ((m_prs & 0x60) == 0x40 && BIT(m_tmode[0], 5)) + timer_start_from_tclk(0); } -u8 st2204_device::irr_r() +u8 st2204_device::t1m_r() { - return downcast<mi_st2204 &>(*mintf).irr; + return m_tmode[1]; } -void st2204_device::irr_w(u8 data) +void st2204_device::t1m_w(u8 data) { - downcast<mi_st2204 &>(*mintf).irr = data; + data &= 0x1f; + u8 t1m_old = std::exchange(m_tmode[1], data); + + if ((data & 0x0f) != (t1m_old & 0x0f)) + { + // forced update + m_tcntr[1] = t1c_r(); + + if (!BIT(data, 3)) + { + if ((m_prs & 0x60) == 0x40) + timer_start_from_tclk(1); + else + m_timer[1]->adjust(attotime::never); + } + else if (data < 0x0b) + t1_start_from_oscx(); + + // TODO: BGRCK source + } + } -u8 st2204_device::prrl_r() +u8 st2204_device::t1c_r() { - return downcast<mi_st2204 &>(*mintf).prr & 0xff; + if (!BIT(m_tmode[1], 3)) + { + if ((m_prs & 0x60) != 0x40) + return m_tcntr[1]; + else + { + u32 div = tclk_pres_div(m_tmode[1] & 0x07); + return 255 - u8(attotime_to_cycles(m_timer[1]->remaining()) / div); + } + } + else if ((m_tmode[1] & 0x07) < 3) + { + u32 div = 256 >> (m_tmode[1] & 0x03); + return 255 - u8(m_timer[1]->remaining().as_ticks(32768) / div); + } + else + return m_tcntr[1]; } -void st2204_device::prrl_w(u8 data) +void st2204_device::t1c_w(u8 data) { - u16 &prr = downcast<mi_st2204 &>(*mintf).prr; - prr = data | (prr & 0x0f00); + m_tcntr[1] = m_tload[1] = data; } -u8 st2204_device::prrh_r() +void st2204_device::st2xxx_tclk_start() { - return downcast<mi_st2204 &>(*mintf).prr >> 8; + if (BIT(m_tmode[0], 5)) + timer_start_from_tclk(0); + if (!BIT(m_tmode[1], 3)) + timer_start_from_tclk(1); } -void st2204_device::prrh_w(u8 data) +void st2204_device::st2xxx_tclk_stop() { - u16 &prr = downcast<mi_st2204 &>(*mintf).prr; - prr = u16(data & 0x0f) << 8 | (prr & 0x00ff); + if (m_timer[0]->enabled()) + { + m_tcntr[0] = t0c_r(); + m_timer[0]->adjust(attotime::never); + } + if (!BIT(m_tmode[1], 3)) + { + m_tcntr[1] = t1c_r(); + m_timer[1]->adjust(attotime::never); + } } -u8 st2204_device::drrl_r() +void st2204_device::psg_w(offs_t offset, u8 data) { - return downcast<mi_st2204 &>(*mintf).drr & 0xff; + if (BIT(offset, 0)) + m_psg[offset >> 1] = u16(data & 0x0f) << 8 | (m_psg[offset >> 1] & 0x0ff); + else + m_psg[offset >> 1] = data | (m_psg[offset >> 1] & 0xf00); } -void st2204_device::drrl_w(u8 data) +void st2204_device::psgc_w(u8 data) { - u16 &drr = downcast<mi_st2204 &>(*mintf).drr; - drr = data | (drr & 0x0700); + m_psgc = data & 0x7f; } -u8 st2204_device::drrh_r() +void st2204_device::dac_w(u8 data) { - return downcast<mi_st2204 &>(*mintf).drr >> 8; + // TODO } -void st2204_device::drrh_w(u8 data) +unsigned st2204_device::st2xxx_lfr_clocks() const { - u16 &drr = downcast<mi_st2204 &>(*mintf).drr; - drr = u16(data & 0x07) << 8 | (drr & 0x00ff); + // ST2202 datasheet suggests 1/4 as many clocks in 4-bit mode; this seems too fast for GameKing 3 (TODO: double-check this) + unsigned lcdcks = ((m_lxmax + m_lfra) * 2 + 3) * 8 * (m_lymax ? m_lymax : 256); + + if (BIT(m_lckr, 4)) + return lcdcks * std::max((m_lckr & 0x0f) * 2, 1); + else + return lcdcks * std::max(((m_lckr & 0x0c) >> 2) * 2, 1); } u8 st2204_device::dmsl_r() @@ -388,28 +501,6 @@ void st2204_device::dcnth_w(u8 data) m_dcnth = data & 0x1f; } -u8 st2204_device::dmrl_r() -{ - return downcast<mi_st2204 &>(*mintf).dmr & 0xff; -} - -void st2204_device::dmrl_w(u8 data) -{ - u16 &dmr = downcast<mi_st2204 &>(*mintf).dmr; - dmr = data | (dmr & 0x0700); -} - -u8 st2204_device::dmrh_r() -{ - return downcast<mi_st2204 &>(*mintf).dmr >> 8; -} - -void st2204_device::dmrh_w(u8 data) -{ - u16 &dmr = downcast<mi_st2204 &>(*mintf).dmr; - dmr = (data & 0x07) << 8 | (dmr & 0x00ff); -} - u8 st2204_device::pmem_r(offs_t offset) { return downcast<mi_st2204 &>(*mintf).pread(offset); @@ -430,7 +521,7 @@ 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)); @@ -438,23 +529,31 @@ void st2204_device::int_map(address_map &map) map(0x000d, 0x000d).rw(FUNC(st2204_device::pfc_r), FUNC(st2204_device::pfc_w)); map(0x000e, 0x000e).rw(FUNC(st2204_device::pfd_r), FUNC(st2204_device::pfd_w)); map(0x000f, 0x000f).rw(FUNC(st2204_device::pmcr_r), FUNC(st2204_device::pmcr_w)); + map(0x0010, 0x0013).w(FUNC(st2204_device::psg_w)); + map(0x0014, 0x0014).w(FUNC(st2204_device::dac_w)); + map(0x0016, 0x0016).w(FUNC(st2204_device::psgc_w)); map(0x0020, 0x0020).rw(FUNC(st2204_device::bten_r), FUNC(st2204_device::bten_w)); - map(0x0021, 0x0021).rw(FUNC(st2204_device::btsr_r), FUNC(st2204_device::btsr_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(0x0021, 0x0021).rw(FUNC(st2204_device::btsr_r), FUNC(st2204_device::btclr_all_w)); + map(0x0023, 0x0023).rw(FUNC(st2204_device::prs_r), FUNC(st2204_device::prs_w)); + map(0x0024, 0x0024).rw(FUNC(st2204_device::t0m_r), FUNC(st2204_device::t0m_w)); + 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)); + 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)); - map(0x0031, 0x0031).rw(FUNC(st2204_device::irr_r), FUNC(st2204_device::irr_w)); + map(0x0031, 0x0031).rw(FUNC(st2204_device::irrl_r), FUNC(st2204_device::irrl_w)); map(0x0032, 0x0032).rw(FUNC(st2204_device::prrl_r), FUNC(st2204_device::prrl_w)); map(0x0033, 0x0033).rw(FUNC(st2204_device::prrh_r), FUNC(st2204_device::prrh_w)); map(0x0034, 0x0034).rw(FUNC(st2204_device::drrl_r), FUNC(st2204_device::drrl_w)); map(0x0035, 0x0035).rw(FUNC(st2204_device::drrh_r), FUNC(st2204_device::drrh_w)); map(0x0036, 0x0036).rw(FUNC(st2204_device::dmrl_r), FUNC(st2204_device::dmrl_w)); map(0x0037, 0x0037).rw(FUNC(st2204_device::dmrh_r), FUNC(st2204_device::dmrh_w)); + map(0x0038, 0x0038).rw(FUNC(st2204_device::misc_r), FUNC(st2204_device::misc_w)); map(0x003c, 0x003c).rw(FUNC(st2204_device::ireql_r), FUNC(st2204_device::ireql_w)); map(0x003d, 0x003d).rw(FUNC(st2204_device::ireqh_r), FUNC(st2204_device::ireqh_w)); map(0x003e, 0x003e).rw(FUNC(st2204_device::ienal_r), FUNC(st2204_device::ienal_w)); @@ -464,9 +563,35 @@ void st2204_device::int_map(address_map &map) map(0x0042, 0x0042).w(FUNC(st2204_device::lvpw_w)); map(0x0043, 0x0043).rw(FUNC(st2204_device::lxmax_r), FUNC(st2204_device::lxmax_w)); map(0x0044, 0x0044).rw(FUNC(st2204_device::lymax_r), FUNC(st2204_device::lymax_w)); + map(0x0045, 0x0045).rw(FUNC(st2204_device::lpan_r), FUNC(st2204_device::lpan_w)); + map(0x0047, 0x0047).rw(FUNC(st2204_device::lctr_r), FUNC(st2204_device::lctr_w)); + map(0x0048, 0x0048).w(FUNC(st2204_device::lckr_w)); + map(0x0049, 0x0049).w(FUNC(st2204_device::lfra_w)); + 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(0x0063, 0x0063).rw(FUNC(st2204_device::bctr_r), FUNC(st2204_device::bctr_w)); + map(0x0066, 0x0066).rw(FUNC(st2204_device::brs_r), FUNC(st2204_device::brs_w)); + map(0x0067, 0x0067).rw(FUNC(st2204_device::bdiv_r), FUNC(st2204_device::bdiv_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 +} |