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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.
Pettan Pyuu (Sun Electronics, 1984)
Memory Area:strnskil_map1
Address RangeLengthFunctionDescription
0x0000-0x9FFF40960ROM
0xC000-0xC7FF2048RAM
0xC800-0xCFFF2048RAM, Sharedshare1
0xD000-0xD7FF2048RAM Write, Sharedstrnskil_videoram_w, videoram
0xD8001Readstrnskil_d800_r
0xD8011Read PortDSW1
0xD8021Read PortDSW2
0xD8031Read PortSYSTEM
0xD8041Read PortP1
0xD8051Read PortP2
0xD8081Writestrnskil_scrl_ctrl_w
0xD8091Write NOP(/* coin counter? */)
0xD80A-0xD80B2Write Only, Sharedxscroll
Memory Area:strnskil_map2
Address RangeLengthFunctionDescription
0x0000-0x5FFF24576ROM
0xC000-0xC7FF2048RAM, Sharedspriteram
0xC800-0xCFFF2048RAM, Sharedshare1
0xD8011Device Writesn1, sn76496_device, write
0xD8021Device Writesn2, sn76496_device, write
 

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
0x0000-0x1FFF8192tvg6-16.90CRC(6905d9d5) (Fluke: BA37)
0x2000-0x3FFF8192tvg7-16.92CRC(40d02bfd) (Fluke: 39AA)
0x4000-0x5FFF8192tvg8-16.94CRC(b18a2244) (Fluke: 3CE6)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192tvg11-16.102CRC(327b7a29) (Fluke: C3F8)
0x2000-0x3FFF8192tvg10-16.101CRC(624ac061) (Fluke: 97FB)
0x4000-0x5FFF8192tvg9-16.100CRC(c477e74c) (Fluke: 7FEB)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192tvg2-16a.7CRC(4cbbbd01) (Fluke: 9FA7)
0x2000-0x3FFF8192tvg3-16a.8CRC(aaa0420f) (Fluke: A81C)
0x4000-0x5FFF8192tvg4-16a.9CRC(43306369) (Fluke: 4650)
0x6000-0x7FFF8192tvg5-16a.10CRC(da9c635f) (Fluke: 0293)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF25616-3.66CRC(dbcd3bec),R Prom type 24s10 (Fluke: 6D56)
0x0100-0x01FF25616-4.67CRC(9eb7b6cf),G Prom type 24s10 (Fluke: B50E)
0x0200-0x02FF25616-5.68CRC(9b30a7f3),B Prom type 24s10 (Fluke: 4311)
0x0300-0x04FF51216-1.148CRC(777e2770),sprite Prom type mb7124h (Fluke: 243E)
0x0500-0x06FF51216-2.97CRC(7f95d4b2),bg Prom type mb7124h (Fluke: C1DE)
Memory Area:sub
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192tvg1-16.2CRC(e36009f6) (Fluke: 0A5E)
Memory Area:user1
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF25616-6.59CRC(ec4faf5b),Prom type 24s10 (Fluke: C61A)
Memory Area:user2
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096tvg12-16.2CRC(3abc6ba8) (Fluke: B148)
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