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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.
21 (Mirco Games, 1976)
Memory Area:hitme_map
Address RangeLengthFunctionDescription
0x0000-0x09FF2560ROM
0x0C00-0x0EFF768RAM Write, Sharedhitme_vidram_w, videoram
0x1000-0x10FF256Mirror, RAM0x300,
0x1400-0x14FF256Readhitme_port_0_r
0x1500-0x15FF256Readhitme_port_1_r
0x1600-0x16FF256Readhitme_port_2_r
0x1700-0x17FF256Readhitme_port_3_r
0x1800-0x18FF256Read PortIN4
0x1900-0x19FF256Read PortIN5
0x1D00-0x1DFF256Writeoutput_port_0_w
0x1E00-0x1FFF512Writeoutput_port_1_w
Memory Area:hitme_portmap
Address RangeLengthFunctionDescription
0x00141Readhitme_port_0_r
0x00151Readhitme_port_1_r
0x00161Readhitme_port_2_r
0x00171Readhitme_port_3_r
0x00181Read PortIN4
0x00191Read PortIN5
0x001D1Writeoutput_port_0_w
0x001E-0x001F2Writeoutput_port_1_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
0x0000-0x01FF512hmcg.h7CRC(818f5fbe) (Fluke: 1127)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x01FF512mirco1.binCRC(aa796ad7) (Fluke: FDCB)
0x0200-0x03FF512hm2.c7CRC(25d47ba4) (Fluke: 0B83)
0x0400-0x05FF512hm4.d7CRC(f8bfda8d) (Fluke: 4ECF)
0x0600-0x07FF512hm6.e7CRC(8aa87118) (Fluke: 23FA)
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