Knights of the Round Memory Map

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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.

Knights of the Round (bootleg, 1991)

Memory Area:knightsb_map

Address Range	Length	Function	Description
0x0000-0x3FFFFF	4194304	ROM
0x800000-0x800001	2	Read Port	IN1 (/* Player input ports */)
0x800002-0x800003	2	Read Port	IN2 (/* Player 3 controls */)
0x800004-0x800005	2	Write NOP	(// writes 0000 here)
0x800006-0x800007	2	Write	fcrash_soundlatch_w (/* Sound command */)
0x800018-0x80001F	8	Read	cps1_dsw_r (/* System input ports / Dip Switches */)
0x800030-0x800037	8	Write NOP	(//AM_WRITE(cps1_coinctrl_w) only writes bit 15)
0x800100-0x80013F	64	RAM, Shared	cps_a_regs (/* CPS-A custom */)
0x800140-0x80017F	64	RAM, Shared	cps_b_regs (/* CPS-B custom */)
0x800180-0x800181	2	Write NOP	(//AM_WRITE(cps1_soundlatch2_w) /* Sound timer fade */)
0x880000-0x880001	2	Write NOP	(// unknown)
0x900000-0x93FFFF	262144	RAM Write, Shared	cps1_gfxram_w, gfxram
0x980000-0x98002F	48	Write	knightsb_layer_w
0x990000-0x990001	2	Write NOP	(// same as 880000)
0xFF0000-0xFFFFFF	65536	RAM

Memory Area:knightsb_z80map

Address Range	Length	Function	Description
0x0000-0x7FFF	32768	ROM
0x8000-0xBFFF	16384	ROM Bank	bank1
0xCFFE-0xCFFF	2	Write NOP	(// writes lots of data)
0xD000-0xD7FF	2048	RAM
0xD800-0xD801	2	Device Read/Write	2151, ym2151_device, read, write
0xDC00	1	Device Read	soundlatch, generic_latch_8_device, read
0xE000	1	Write	knightsb_snd_bankswitch_w
0xE400	1	Write	fcrash_msm5205_0_data_w
0xE800	1	Write	fcrash_msm5205_1_data_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:audiocpu

Address Range	Length	Label/Location	Description
0x0000-0x3FFFF	262144	1.ic26	CRC(bd6f9cc1) (Fluke: A97F)