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casio/fp200.cpp: rewrite video section
This commit is contained in:
angelosa
parent
f28fba1d5e
commit
c5086e6851
@ -1,19 +1,20 @@
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// license:BSD-3-Clause
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// license:BSD-3-Clause
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// copyright-holders:Angelo Salese
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// copyright-holders:Angelo Salese
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// thanks-to: Takeda Toshiya
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/**************************************************************************************************
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/**************************************************************************************************
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FP-200 (c) 1982 Casio
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FP-200 (c) 1982 Casio
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TODO:
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TODO:
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- Identify LCDC, move to devices
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(2x MSM6216-01GS-1K + 1x MSM6215-01GS-K glued together by the gate array);
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- backup RAM;
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- backup RAM;
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- cassette i/f;
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- cassette i/f, glued together by discrete;
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- serial i/f;
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- FDC (requires test program that Service manual mentions);
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- FDC (requires test program that Service manual mentions);
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- mini plotter printer (FP-1011PL)
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- graphic printer (FP-1012PR)
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Notes:
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Notes:
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- on start-up there's a "memory illegal" warning. Enter "RESET" command
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- on start-up there's a "memory illegal" warning. Issue a "RESET" command to initialize it.
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to initialize it (thanks to Takeda Toshiya for pointing this out).
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**************************************************************************************************/
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**************************************************************************************************/
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@ -38,6 +39,7 @@ public:
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, m_rtc(*this, "rtc")
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, m_rtc(*this, "rtc")
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, m_ioview(*this, "ioview")
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, m_ioview(*this, "ioview")
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, m_key(*this, "KEY%X", 0U)
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, m_key(*this, "KEY%X", 0U)
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, m_gfxrom(*this, "chargen")
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{ }
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{ }
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void fp200(machine_config &config);
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void fp200(machine_config &config);
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@ -50,26 +52,24 @@ private:
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required_device<rp5c01_device> m_rtc;
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required_device<rp5c01_device> m_rtc;
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memory_view m_ioview;
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memory_view m_ioview;
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required_ioport_array<16> m_key;
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required_ioport_array<16> m_key;
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required_memory_region m_gfxrom;
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uint8_t *m_chargen = nullptr;
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uint8_t *m_chargen = nullptr;
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uint8_t m_keyb_matrix = 0;
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uint8_t m_keyb_matrix = 0;
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struct{
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std::unique_ptr<uint8_t[]> m_lcd_vram[2];
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uint8_t x = 0;
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u16 m_lcd_yoffset[2]{};
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uint8_t y = 0;
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u16 m_lcd_address = 0;
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uint8_t status = 0;
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u8 m_lcd_status = 0;
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std::unique_ptr<uint8_t[]> vram;
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bool m_lcd_text_mode = false;
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std::unique_ptr<uint8_t[]> attr;
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}m_lcd;
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uint8_t read_lcd_attr(uint16_t X, uint16_t Y);
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uint8_t read_lcd_vram(uint16_t X, uint16_t Y);
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void write_lcd_attr(uint16_t X, uint16_t Y,uint8_t data);
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void write_lcd_vram(uint16_t X, uint16_t Y,uint8_t data);
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// screen updates
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uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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uint8_t lcd_r(offs_t offset);
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template <unsigned N> u8 lcd_data_r(offs_t offset);
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void lcd_w(offs_t offset, uint8_t data);
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template <unsigned N> void lcd_data_w(offs_t offset, u8 data);
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void lcd_map(address_map &map);
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uint8_t keyb_r(offs_t offset);
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uint8_t keyb_r(offs_t offset);
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void keyb_w(offs_t offset, uint8_t data);
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void keyb_w(offs_t offset, uint8_t data);
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@ -89,239 +89,120 @@ private:
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void fp200_state::video_start()
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void fp200_state::video_start()
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{
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{
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m_lcd.vram = make_unique_clear<uint8_t[]>(20*64);
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m_lcd_vram[0] = make_unique_clear<uint8_t[]>(0x400);
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m_lcd.attr = make_unique_clear<uint8_t[]>(20*64);
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m_lcd_vram[1] = make_unique_clear<uint8_t[]>(0x400);
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save_pointer(NAME(m_lcd_vram[0]), 0x400);
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save_pointer(NAME(m_lcd_vram[1]), 0x400);
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}
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}
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// TODO: rewrite, don't loop 4 times
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uint32_t fp200_state::screen_update( screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect )
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uint32_t fp200_state::screen_update( screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect )
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{
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{
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uint16_t l_offs, r_offs;
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for(int y = cliprect.min_x; y <= cliprect.max_y; y ++)
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bitmap.fill(0, cliprect);
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l_offs = 0;
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r_offs = 0;
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for(int y = cliprect.top(); y <= cliprect.bottom(); y++)
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{
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{
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for(int x = 0; x < 80;x++)
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for(int x = cliprect.min_x; x <= cliprect.max_x; x ++)
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{
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{
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if(m_lcd.attr[x / 8 + y * 20] == 0x50)
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const u8 which = x < 80;
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{
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const u8 x_tile = x >> 3;
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l_offs = (y & ~7);
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const u8 y_tile = y >> 3;
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break;
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const u16 base_addr = ((x_tile % 10 + y_tile * 0x80) + m_lcd_yoffset[which]) & 0x3ff;
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}
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const u8 xi = x & 7;
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}
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const u8 yi = y & 7;
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}
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for(int y = cliprect.top(); y <= cliprect.bottom(); y++)
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const u8 vram = m_lcd_vram[which][(base_addr + yi * 0x10) & 0x3ff];
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{
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uint8_t const pix = BIT(vram, xi);
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for(int x=80;x<160;x++)
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bitmap.pix(y, x) = pix;
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{
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if(m_lcd.attr[x/8+y*20] == 0x50)
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{
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r_offs = (y & ~7);
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break;
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}
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}
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}
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for(int y = cliprect.top(); y <= cliprect.bottom(); y++)
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{
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for(int x=0;x<80;x++)
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{
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uint16_t yoffs;
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yoffs = y + l_offs;
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if(yoffs >= 64)
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yoffs -= 64;
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if(m_lcd.attr[x/8+yoffs*20] == 0x60 || m_lcd.attr[x/8+yoffs*20] == 0x50)
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{
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uint8_t const vram = m_lcd.vram[x/8+yoffs*20];
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uint8_t const pix = ((m_chargen[vram*8+(x & 7)]) >> (7-(yoffs & 7))) & 1;
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bitmap.pix(y,x) = pix;
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}
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/*
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else if(m_lcd.attr[x/8+yoffs*20] == 0x40)
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{
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uint8_t const vram = m_lcd.vram[x/8+yoffs*20];
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uint8_t const pix = (vram) >> (7-(yoffs & 7)) & 1;
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bitmap.pix(y,x) = pix;
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}*/
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}
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}
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for(int y = cliprect.top(); y <= cliprect.bottom(); y++)
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{
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for(int x=80;x<160;x++)
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{
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uint16_t yoffs;
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yoffs = y + r_offs;
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if(yoffs >= 64)
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yoffs -= 64;
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if(m_lcd.attr[x/8+yoffs*20] == 0x60 || m_lcd.attr[x/8+yoffs*20] == 0x50)
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{
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uint8_t const vram = m_lcd.vram[x/8+yoffs*20];
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uint8_t const pix = ((m_chargen[vram*8+(x & 7)]) >> (7-(yoffs & 7))) & 1;
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bitmap.pix(y,x) = pix;
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}
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/*else if(m_lcd.attr[x/8+yoffs*20] == 0x40)
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{
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uint8_t const vram = m_lcd.vram[x/8+yoffs*20];
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uint8_t const pix = (vram) >> (7-(yoffs & 7)) & 1;
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bitmap.pix(y,x) = pix;
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}*/
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}
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}
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}
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}
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return 0;
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return 0;
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}
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}
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template <unsigned N> u8 fp200_state::lcd_data_r(offs_t offset)
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{
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return m_lcd_vram[N][m_lcd_address & 0x3ff];
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}
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template <unsigned N> void fp200_state::lcd_data_w(offs_t offset, u8 data)
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{
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switch (m_lcd_status)
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{
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// select mode
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case 0xb:
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if (BIT(data, 6))
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{
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if (BIT(data, 4))
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m_lcd_yoffset[N] = m_lcd_address;
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else
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m_lcd_text_mode = bool(BIT(data, 5));
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}
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if (data & 0x8f)
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logerror("Warning: LCD write with unknown mode %02x\n", data);
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break;
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// data write
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case 0x1:
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if (m_lcd_text_mode)
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{
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// The handling doesn't make a whole lot of sense for being practically usable ...
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const u8 tile_address = bitswap<8>(data, 3, 2, 1, 0, 7, 6, 5, 4);
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for (int yi = 0; yi < 8; yi ++)
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{
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u8 tile = 0;
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for (int xi = 0; xi < 8; xi ++)
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tile |= BIT(m_gfxrom->base()[tile_address * 8 + xi], 7 - yi) << xi;
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m_lcd_vram[N][(m_lcd_address + 0x10 * yi) & 0x3ff] = tile;
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}
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}
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else
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m_lcd_vram[N][m_lcd_address & 0x3ff] = data;
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break;
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default:
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logerror("Warning: LCD write with unknown status type %02x\n", m_lcd_status);
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break;
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}
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}
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/*
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/*
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[1] DDDD DDDD vram data/attr (left half)
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* video section is 2x MSM6216-01GS-1K + 1x MSM6215-01GS-K glued together by the gate array
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[2] DDDD DDDD vram data/attr (right half)
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*
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[8] SSSS --YY Status code (1=vram type/0xb=attr type) / upper part of Y address
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* [1] DDDD DDDD vram data/mode select (right half)
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[9] YYYY XXXX lower part of Y address / X address
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* [2] DDDD DDDD vram data/mode select (left half)
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*/
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* [8] SSSS ---- Status code (1=vram type/0xb=attr type)
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uint8_t fp200_state::read_lcd_attr(uint16_t X, uint16_t Y)
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* ---- --YY upper part of Y address
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* [9] YYYY XXXX lower part of Y address / X address
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*/
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void fp200_state::lcd_map(address_map &map)
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{
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{
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uint16_t base_offs;
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map(0x1, 0x1).rw(FUNC(fp200_state::lcd_data_r<1>), FUNC(fp200_state::lcd_data_w<1>));
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uint8_t res = 0;
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map(0x2, 0x2).rw(FUNC(fp200_state::lcd_data_r<0>), FUNC(fp200_state::lcd_data_w<0>));
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map(0x8, 0x8).lrw8(
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for(int yi=0;yi<8;yi++)
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NAME([this] (offs_t offset) {
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{
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u8 res = (m_lcd_status & 0xf) << 4 | (m_lcd_address & 0x300) >> 4;
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base_offs = X+(Y+yi)*20;
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return res;
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}),
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if(base_offs >= 20*64)
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NAME([this] (offs_t offset, u8 data) {
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return 0xff;
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m_lcd_status = (data & 0xf0) >> 4;
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if (m_lcd_status == 0xb)
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res = m_lcd.attr[base_offs];
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{
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}
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m_lcd_address &= 0xff;
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m_lcd_address |= (data & 0x3) << 8;
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return res;
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}
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}
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})
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);
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uint8_t fp200_state::read_lcd_vram(uint16_t X, uint16_t Y)
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map(0x9, 0x9).lrw8(
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{
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NAME([this] (offs_t offset) {
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uint16_t base_offs;
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u8 res = m_lcd_address & 0xff;
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uint8_t res = 0;
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return res;
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}),
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for(int yi=0;yi<8;yi++)
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NAME([this] (offs_t offset, u8 data) {
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{
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m_lcd_address &= 0x300;
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base_offs = X+(Y+yi)*20;
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m_lcd_address |= data;
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})
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if(base_offs >= 20*64)
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);
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return 0xff;
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res = m_lcd.vram[base_offs];
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}
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return res;
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}
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uint8_t fp200_state::lcd_r(offs_t offset)
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{
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uint8_t res;
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res = 0;
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switch(offset)
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{
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case 1:
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//logerror("%d %d -> (L) %02x\n",m_lcd.x,m_lcd.y,m_lcd.status);
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if(m_lcd.status == 0xb)
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res = read_lcd_attr(m_lcd.x,m_lcd.y);
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else if(m_lcd.status == 1)
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res = read_lcd_vram(m_lcd.x,m_lcd.y);
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break;
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case 2:
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//logerror("%d %d -> (R) %02x\n",m_lcd.x,m_lcd.y,m_lcd.status);
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if(m_lcd.status == 0xb)
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res = read_lcd_attr(m_lcd.x + 10,m_lcd.y);
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else if(m_lcd.status == 1)
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res = read_lcd_vram(m_lcd.x + 10,m_lcd.y);
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break;
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case 8:
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res = (m_lcd.status & 0xf) << 4;
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res |= (m_lcd.y & 0x30) >> 4;
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break;
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case 9:
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res = (m_lcd.y & 0xf) << 4;
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res |= (m_lcd.x & 0xf);
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break;
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}
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return res;
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}
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void fp200_state::write_lcd_attr(uint16_t X, uint16_t Y,uint8_t data)
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{
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uint16_t base_offs;
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for(int yi=0;yi<8;yi++)
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{
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base_offs = X+(Y+yi)*20;
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if(base_offs >= 20*64)
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return;
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//if(data != 0x60)
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// logerror("%d %d %02x\n",X,Y,data);
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m_lcd.attr[base_offs] = data;
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}
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}
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void fp200_state::write_lcd_vram(uint16_t X, uint16_t Y,uint8_t data)
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{
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uint16_t base_offs;
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for(int yi=0;yi<8;yi++)
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{
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base_offs = X+(Y+yi)*20;
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if(base_offs >= 20*64)
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return;
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|
|
||||||
m_lcd.vram[base_offs] = data;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
void fp200_state::lcd_w(offs_t offset, uint8_t data)
|
|
||||||
{
|
|
||||||
switch(offset)
|
|
||||||
{
|
|
||||||
case 1:
|
|
||||||
//logerror("%d %d -> %02x (%c) (L %02x)\n",m_lcd.x,m_lcd.y,data,data,m_lcd.status);
|
|
||||||
if(m_lcd.status == 0xb)
|
|
||||||
write_lcd_attr(m_lcd.x,m_lcd.y,data);
|
|
||||||
else if(m_lcd.status == 1)
|
|
||||||
write_lcd_vram(m_lcd.x,m_lcd.y,data);
|
|
||||||
break;
|
|
||||||
case 2:
|
|
||||||
//logerror("%d %d -> %02x (%c) (R %02x)\n",m_lcd.x + 10,m_lcd.y,data,data,m_lcd.status);
|
|
||||||
if(m_lcd.status == 0xb)
|
|
||||||
write_lcd_attr(m_lcd.x + 10,m_lcd.y,data);
|
|
||||||
else if(m_lcd.status == 1)
|
|
||||||
write_lcd_vram(m_lcd.x + 10,m_lcd.y,data);
|
|
||||||
break;
|
|
||||||
case 8:
|
|
||||||
m_lcd.status = (data & 0xf0) >> 4;
|
|
||||||
if(m_lcd.status == 0x0b)
|
|
||||||
m_lcd.y = (m_lcd.y & 0xf) | ((data & 3) << 4);
|
|
||||||
break;
|
|
||||||
case 9:
|
|
||||||
m_lcd.y = (m_lcd.y & 0x30) | ((data & 0xf0) >> 4);
|
|
||||||
m_lcd.x = data & 0xf;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
|
|
||||||
uint8_t fp200_state::keyb_r(offs_t offset)
|
uint8_t fp200_state::keyb_r(offs_t offset)
|
||||||
@ -353,10 +234,11 @@ void fp200_state::main_io(address_map &map)
|
|||||||
// m_ioview[0](0x20, 0x2f) AUTO-POWER OFF
|
// m_ioview[0](0x20, 0x2f) AUTO-POWER OFF
|
||||||
// m_ioview[0](0x40, 0x4f) FDC Device ID Code (5 for "FP-1021FD")
|
// m_ioview[0](0x40, 0x4f) FDC Device ID Code (5 for "FP-1021FD")
|
||||||
// m_ioview[0](0x80, 0xff) FDD (unknown type)
|
// m_ioview[0](0x80, 0xff) FDD (unknown type)
|
||||||
m_ioview[1](0x00, 0x0f).rw(FUNC(fp200_state::lcd_r), FUNC(fp200_state::lcd_w));
|
m_ioview[1](0x00, 0x0f).m(*this, FUNC(fp200_state::lcd_map));
|
||||||
// m_ioview[1](0x10, 0x10) I/O control (w/o), D1 selects CMT or RS-232C
|
// m_ioview[1](0x10, 0x10) I/O control (w/o), D1 selects CMT or RS-232C
|
||||||
// m_ioview[1](0x11, 0x11) I/O control (w/o), uPD65010G gate array control
|
// m_ioview[1](0x11, 0x11) I/O control (w/o), uPD65010G gate array control
|
||||||
m_ioview[1](0x20, 0x20).r(FUNC(fp200_state::keyb_r));
|
// TODO: writes are undocumented, just before reads PC=35C (strobe for update?)
|
||||||
|
m_ioview[1](0x20, 0x20).r(FUNC(fp200_state::keyb_r)).nopw();
|
||||||
m_ioview[1](0x21, 0x21).w(FUNC(fp200_state::keyb_w));
|
m_ioview[1](0x21, 0x21).w(FUNC(fp200_state::keyb_w));
|
||||||
// m_ioview[1](0x40, 0x4f) CMT & RS-232C control
|
// m_ioview[1](0x40, 0x4f) CMT & RS-232C control
|
||||||
// m_ioview[1](0x80, 0x8f) [Centronics] printer
|
// m_ioview[1](0x80, 0x8f) [Centronics] printer
|
||||||
@ -364,7 +246,6 @@ void fp200_state::main_io(address_map &map)
|
|||||||
|
|
||||||
INPUT_CHANGED_MEMBER(fp200_state::keyb_irq)
|
INPUT_CHANGED_MEMBER(fp200_state::keyb_irq)
|
||||||
{
|
{
|
||||||
/* a keyboard stroke causes a rst7.5 */
|
|
||||||
m_maincpu->set_input_line(I8085_RST75_LINE, (newval) ? ASSERT_LINE : CLEAR_LINE);
|
m_maincpu->set_input_line(I8085_RST75_LINE, (newval) ? ASSERT_LINE : CLEAR_LINE);
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -477,7 +358,8 @@ static INPUT_PORTS_START( fp200 )
|
|||||||
|
|
||||||
PORT_START("KEYMOD")
|
PORT_START("KEYMOD")
|
||||||
PORT_BIT( 0x01f, IP_ACTIVE_LOW, IPT_UNUSED )
|
PORT_BIT( 0x01f, IP_ACTIVE_LOW, IPT_UNUSED )
|
||||||
PORT_BIT( 0x020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CETL") PORT_TOGGLE
|
// positional switch on keyboard
|
||||||
|
PORT_BIT( 0x020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Basic / CETL Mode") PORT_TOGGLE
|
||||||
PORT_BIT( 0x040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT)
|
PORT_BIT( 0x040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT)
|
||||||
PORT_BIT( 0x080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BREAK")
|
PORT_BIT( 0x080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BREAK")
|
||||||
PORT_BIT( 0x100, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("GRAPH")
|
PORT_BIT( 0x100, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("GRAPH")
|
||||||
@ -505,12 +387,6 @@ GFXDECODE_END
|
|||||||
|
|
||||||
void fp200_state::machine_start()
|
void fp200_state::machine_start()
|
||||||
{
|
{
|
||||||
uint8_t *raw_gfx = memregion("raw_gfx")->base();
|
|
||||||
m_chargen = memregion("chargen")->base();
|
|
||||||
|
|
||||||
// HACK: convert GFX to a more usable format
|
|
||||||
for(int i = 0; i < 0x800; i++)
|
|
||||||
m_chargen[i] = raw_gfx[bitswap<16>(i, 15, 14, 13, 12, 11, 6, 5, 4, 3, 10, 9, 8, 7, 2, 1, 0)];
|
|
||||||
}
|
}
|
||||||
|
|
||||||
void fp200_state::machine_reset()
|
void fp200_state::machine_reset()
|
||||||
@ -572,10 +448,8 @@ ROM_START( fp200 )
|
|||||||
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASE00 )
|
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASE00 )
|
||||||
ROM_LOAD( "fp200rom.bin", 0x0000, 0x8000, CRC(dba6e41b) SHA1(c694fa19172eb56585a9503997655bcf9d369c34) )
|
ROM_LOAD( "fp200rom.bin", 0x0000, 0x8000, CRC(dba6e41b) SHA1(c694fa19172eb56585a9503997655bcf9d369c34) )
|
||||||
|
|
||||||
ROM_REGION( 0x800, "raw_gfx", ROMREGION_ERASE00 )
|
|
||||||
ROM_LOAD( "chr.bin", 0x0000, 0x800, CRC(2e6501a5) SHA1(6186e25feabe6db851ee7d61dad11e182a6d3a4a) )
|
|
||||||
|
|
||||||
ROM_REGION( 0x800, "chargen", ROMREGION_ERASE00 )
|
ROM_REGION( 0x800, "chargen", ROMREGION_ERASE00 )
|
||||||
|
ROM_LOAD( "chr.bin", 0x0000, 0x800, CRC(2e6501a5) SHA1(6186e25feabe6db851ee7d61dad11e182a6d3a4a) )
|
||||||
ROM_END
|
ROM_END
|
||||||
|
|
||||||
} // anonymous namespace
|
} // anonymous namespace
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user