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Memory Map

The following is a memory map that was generated based on the MAME source code (.180).  This information is only as accurate as the MAME driver is.  If you see any errors, please let me know what that error is.
 
The Memory Area is related to where the information is from (CPU, Sound Board, etc..), and it may also reflect what it has in common with other hardware.
Chi-Toitsu (Yuga, 1988)
Memory Area:mgakuen_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0xBFFF16384ROM Bankbank1
0xC000-0xC7FF2048RAM Device Writepalette, palette_device, write (/* palette RAM */)
0xC800-0xCFFF2048Read/Write, Sharedpang_colorram_r, pang_colorram_w, colorram (/* Attribute RAM */)
0xD000-0xDFFF4096Read/Write, Sharedmgakuen_videoram_r, mgakuen_videoram_w, videoram (/* char RAM */)
0xE000-0xEFFF4096RAM(/* Work RAM */)
0xF000-0xFFFF4096Read/Writemgakuen_objram_r, mgakuen_objram_w (/* OBJ RAM */)
Memory Area:mitchell_io_map
Address RangeLengthFunctionDescription
0x00001Writepang_gfxctrl_w (/* Palette bank, layer enable, coin counters, more */)
0x0000-0x00023Readinput_r (/* The Mahjong games and Block Block need special input treatment */)
0x00011Writeinput_w
0x00021Writepang_bankswitch_w (/* Code bank register */)
0x00031Device Writeymsnd, ym2413_device, data_port_w
0x00041Device Writeymsnd, ym2413_device, register_port_w
0x00051Read, Device Writepang_port5_r, oki, okim6295_device, write
0x00061Write NOP(/* watchdog? irq ack? */)
0x00071Writepang_video_bank_w (/* Video RAM bank register */)
0x00081Writeeeprom_cs_w
0x00101Writeeeprom_clock_w
0x00181Writeeeprom_serial_w
 

ROM Map for this game

 
This is the ROM map for the game.  This should tell you what address the ROM is at, how big it is, what it's used for.   
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288mg-1.13hCRC(fd6a0805),chars (Fluke: D183)
0x80000-0xFFFFF524288mg-2.14hCRC(e26e871e) (Fluke: 327C)
0x100000-0x17FFFF524288mg-3.16hCRC(dd781d9a) (Fluke: 036C)
0x180000-0x1FFFFF524288mg-4.17hCRC(97afcc79) (Fluke: 8353)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF131072mc06.4lCRC(0ef83926),sprites (Fluke: E804)
0x20000-0x3FFFF131072mc07.6lCRC(59f9ffb1) (Fluke: 2258)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768mc01.1jCRC(0bebe45f) (Fluke: 548D)
0x10000-0x2FFFF131072mc02.1lCRC(375378b0) (Fluke: 35B9)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288mg-5.1cCRC(170332f1),banked (Fluke: 6C39)
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