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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.
Ace (Allied Leisure, 1976)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x09FF2560ROM
0x2000-0x20FF256RAM Write, Sharedace_scoreram_w, scoreram (/* 2x2101 */)
0x8000-0x80FF256RAM Write, Sharedace_characterram_w, characterram (/* 3x3101 (3bits: 0, 1, 2) */)
0x8300-0x83FF256RAM, Sharedram2 (/* 2x2101 */)
0xC000-0xC0056Writeace_objpos_w
0xC0081Read Portc008
0x0001P1 ThrustActive High
0xC0091Read Portc009
0x0001P1 SlowdownActive High
0xC00A1Read Portc00a
0x0001Joystick LeftActive High
0xC00B1Read Portc00b
0x0001Joystick RightActive High
0xC00C1Read Portc00c
0x0001P1 FireActive High
0xC00D1Read Portc00d
0x0001P2 ThrustActive High
0xC00E1Read Portc00e
0x0001P2 SlowdownActive High
0xC00F1Read Portc00f
0x0001Joystick LeftActive High
0xC0101Read Portc010
0x0001Joystick RightActive High
0xC0111Read Portc011
0x0001P2 FireActive High
0xC0121Readunk_r
0xC0141Read Portc014
0x0001CustomActive High
0xC0151Read Portc015
0x0001Coin 1Active High
0xC0161Read Portc016
0x0001Start 1Active High
0xC0171Readunk_r
0xC0181Readunk_r
0xC0191Readunk_r
0xC0201Readunk_r
0xC0211Readunk_r
0xC0221Readunk_r
0xC0231Readunk_r
0xC0241Readunk_r
0xC0251Readunk_r
0xC0261Readunk_r
 

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
0x0000-0x01FF512ace.k4CRC(daa05ec6) (Fluke: AF5E)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x01FF512ace.a1CRC(16811834) (Fluke: 337C)
0x0200-0x03FF512ace.a2CRC(f9eae80e) (Fluke: 3187)
0x0400-0x05FF512ace.a3CRC(c5c63b8c) (Fluke: BE27)
0x0600-0x07FF512ace.a4CRC(ea4503aa) (Fluke: A636)
0x0800-0x09FF512ace.a5CRC(623c58e7) (Fluke: 1F58)
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