162 lines
7.0 KiB
Plaintext
162 lines
7.0 KiB
Plaintext
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How to use the SMC files for the SNES without spending 300 pounds on
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a copier with 16M of memory :
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Section 1 - How to hack new games into an old cartridge.
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Section 2 - Multi Game cartridge.
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Section 3 - Cheap copier ( under 100 pounds )
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All of these options require no modifications or upgrades to the SNES.
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If this file is found on its own, or if you have any quetions, please
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leave a message for Bill Door @ Minders Den 0293 565393.
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Section 1 Crude but it's a start
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--------------------------------
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This only works with 4M games and does rely on you having access
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to all sorts of electronics equipment and tools. One of the problems
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with copying games is that the memory devices used cost 8.50 pounds
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for each 4M. Although these devices can be re-used and provide
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permanent games cartridges.
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The basic idea is to take a cartridge to bits and swap to game ROM
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with your own EPROM as follows :
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1) You will require, a 27C4001 EPROM and programmer, soldering equipment,
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several 32 pin IC sockets and a long pin 32 pin IC socket.
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2) First open a suitable 4M cartridge. This should be one that contains
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a single 4M ROM. If you don't know what I'm talking about, stop now. To
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open the cartridge you should use a 'System Zero' screwdriver, but needle
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nose pliers work.
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3) Now for the tricky bit. De-solder and remove the ROM from the cartridge
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PCB. The easiest way to do this is to find an expert. Just be very careful.
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Now solder a socket into the vacant holes; plug the ROM back into the
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socket and test that the game still works. The board should be plugged in
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with the component side towards the back of the SNES.
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4) Next you need to program the SMC file into the 27C4001 EPROM. First
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the SMC file is converted to a binary file using the program provided.
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This file is then copied to your programmer and the EPROM programmed. The
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file should exactly fit the device ( 512K bytes ).
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5) The next problem is that SNES use two different pinouts for their ROM's.
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A few are JEDEC compatible and the EPROM will plug directly into the
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socket in the cartridge.
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The remainder use a Japanese ROM pinout as follows :
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EPROM ROM ROM EPROM
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------------------
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A19 A17 : 1 \__/ 32 : VCC VCC
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A16 A18 : 2 31 : *OE A18
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A15 A15 : 3 30 : A19 A17
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A12 A12 : 4 29 : A14 A14
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A7 A7 : 5 28 : A13 A13
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A6 A6 : 6 27 : A8 A8
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A5 A5 : 7 26 : A9 A9
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A4 A4 : 8 25 : A11 A11
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A3 A3 : 9 24 : A16 *OE
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A2 A2 : 10 23 : A10 A10
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A1 A1 : 11 22 : *CE *CE
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A0 A0 : 12 21 : D7 D7
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D0 D0 : 13 20 : D6 D6
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D1 D1 : 14 19 : D5 D5
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D2 D2 : 15 18 : D4 D4
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GND GND : 16 17 : D3 D3
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------------------
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So you need to build an adapter socket. This consists of a 32 pin
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socket with long legs, plugged into a normal socket. So that when
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finished you have the EPROM on top plugged into a long pin socket,
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this is plugged into a normal socket, which is in turn plugged into
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the socket in the cartridge. I would strongly recommend 'turned pin'
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sockets.
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Some of the legs on the long pin socket must now be cut and linked.
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Cut short legs 1,2,24,30 and 31.
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Link pins as follows :
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Pin 1 on top socket to pin 30 on lower socket.
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Pin 2 on top socket to pin 24 on lower socket.
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Pin 24 on top socket to pin 32 on lower socket.
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Pin 31 on top socket to pin 1 on lower socket.
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Pin 32 on top socket to pin 2 on lower socket.
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Now check back through what you have done. Plug the EPROM into the top
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socket and plug the whole thing into the cartridge.
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The cartridge will now work with the new game, which can be changed for
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anouther game at any time.
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Too much hassle ? Read the next section.
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Section 2 Multi Game Cartridge
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-------------------------------
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This is a basic PCB which replaces the cartridge and can hold up to four
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programs, stored in EPROM's. So you will need the facilities to program
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EPROM's.
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The cartridge holds up to eight EPROM's of 1,2,4 or 8M each. There is also
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a battery backed up RAM with a separate section for each game.
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First you will need to get hold of one of these PCB's. As soon as I have
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the full details I will post the PCB layout, schematic and parts list.
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If it is sorted out in time, there will be an accompanying file with a
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contact address.
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First the SMC files have to be converted into binary files for programming
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the EPROM's. The accompanying program does this conversion and splits the
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game into a separate file for each EPROM required. The EPROM's are then
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plugged into the cartridge, making a permanent game.
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The games within the cartridge are cycled each time the reset is pressed.
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If you get bored with a game you can erase it and re-program.
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Section 3 The cheapo copier
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----------------------------
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Not a DIY kit, but the basic unit costs under 100 pounds.
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This is a simpler replacement for the SMC copier. It does not have its
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own disc drive, but communicates with a PC via its printer port.
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Games and RAM contents can be loaded and saved to disc on the PC.
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The unit is only slightly larger the a standard cartridge and does
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not require any extra power. The basic unit has 8M of RAM and can hold
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up to 64M, with 64K of backed up RAM.
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There is an expansion socket for reading cartridges.
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Once power is removed from the SNES the stored program will be lost.
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If it is sorted out in time, there will be an accompanying file with a
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contact address.
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|-THiS FiLE PASSED THR0UGH --- /\ ---.------ /\ ---*--. FiDONET 2:200/600.34-|
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| . * . // \ . // \ . FUJiNeT 7:102/102 |
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| I.C.S Swedish HQ // \ + // \ . MeGANeT 66:666/1 |
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| + // / \ // \ + NeST 90:1101/112 |
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| Sync World HQ /\\ \\ / . // \\ / |
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| . // \ \/ // /\/ . 16800 DUAL STANDARD |
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| +46-451-91002 \\ / / \\ \/ + |
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| * \\ / + . \\ \ . . . |
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| . \\ / \\ / |
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|- SysOp: Troed ------------ \/ARCASTIC -- \/XISTENCE --- CoSysOp: Zaphod B -|
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< Advertisment added using -=Bad Ad=- 1.91 by Troed/Sync. BBS: +46-451-91002 >
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