home *** CD-ROM | disk | FTP | other *** search
- Frequently Asked Questions (FAQS);faqs.313
-
-
-
- 1- Yellow Switch Palace 31- Butter Bridge 2 61- #7 Larry's Castle
- 2- Yoshi's Island 1 32- #4 Ludwig's Castle 62- Valley Fortress
- 3- Yoshi's House 33- Cookie Mountain 63- Valley Of Bowser 3
- 4- Yoshi's Island 2 34- Cheese Bridge 64- Valley Ghost House
- 5- Yoshi's Island 3 35- Soda Lake 65- Valley Of Bowser 2
- 6- Yoshi's Island 4 36- Star World 1 66- Valley Of Bowser 1
- 7- #1 Iggy's Castle 37- Forest Of Illusion 1 67- Star World 5
- 8- Donut Plains 1 38- Forest Ghost House 68- Star World 4
- 9- Donut Plains 2 39- Forest Of Illusion 2 69- Gnarly
- 10- Donut Secret 1 40- Blue Switch Palace 70- Tubular
- 11- Donut Secret House 41- Forest Of Illusion 4 71- Way Cool
- 12- Green Switch Palace 42- Forest Secret Area 72- Awesome
- 13- Donut Ghost House 43- Forest Of Illusion 3 73- Groovy
- 14- Top Secret 44- Chocolate Secret 74- Mondo
- 15- Donut Plains 3 45- Forest Fortress 75- Outrageous
- 16- Donut Plains 4 46- #5 Roy's Castle 76- Funky
- 17- #2 Morton's Castle 47- Chocolate Island 1 * - Star Road
- 18- Vanilla Dome 1 48- Chocolate Ghost House P1..6- Pipes
- 19- Donut Secret 2 49- Chocolate Island 2
- 20- Vanilla Secret 1 50- Chocolate Island 3
- 21- Vanilla Dome 2 51- Chocolate Fortress
- 22- Red Switch Palace 52- Chocolate Island 4
- 23- Vanilla Ghost House 53- Chocolate Island 5
- 24- Vanilla Dome 3 54- Star World 2
- 25- Vanilla Dome 4 55- #6 Wendy's Castle
- 26- #3 Lemmy's Castle 56- Sunken Ghost Ship
- 27- Vanilla Secret 2 57- Star World 3
- 28- Vanilla Secret 3 58- Front Door
- 29- Vanilla Fortress 59- Back Door
- 30- Butter Bridge 1 60- Valley Of Bowser 4
-
-
- Sol-Feace code:
-
- Press the sequence A, B, C, A, B, C, B, C, B, A on the title screen. This will
- let you select the starting stage and get 99 ships in the options screen.
-
-
- Keith Courage code:
-
- Reset the game, and hold I, II, and SELECT at the same time until "start"
- appears. Press U 8 times for the debug screen.
-
-
- Ninja Spirit code:
-
- Press START while holding SELECT at the title screen for the sound test option
- to appear in the menu.
-
- For a stage select, on the title screen press II, I, II, II, I, II. Hold
- SELECT and press RUN. You can now stage select 1-3. To select 4-6, hold down
- SELECT while choosing a level.
-
- The TG-16 cheat archives claims a special message appears with I, II, II, I,
- SELECT, RUN or I, II, II, I, SELECT, II, I, I, II. (Anyone get it?)
-
-
- Gate of Thunder code:
-
- On the title screen, I, II, II, I, S, I, II, I, II, S, S, RUN and enter the
- configuration menu for a stage select.
-
-
- Bomberman on Turbo Duo pack-in CD:
-
- The following code on the Gate of Thunder/Bonk CD will let you play
- Bomberman, a hidden fourth game: U, R, D, L, II.
-
-
- ``Is Street Fighter II on any home video game systems other than SNES?''
-
- There is a PC Engine license for Fighting Street II (Fighting Street I was
- SFI). The game is 2 1/2 megabytes (larger than the SNES version, and 2 1/2
- times as large as any other PC Engine cartridge). EGM has reported that the
- game will probably be Champion Edition, and will be released only in Japan.
-
- There are, of course, rumors of a Genesis version floating around. There's a
- new 6 button Genesis controller, which has made some people suspicious.
-
-
- Streetfighter II (SNES) codes:
-
- Down-Right-Up-Left-Y-B-X-A on the Super Famicom version, Down-Right-Up-Left-Y-B
- on the SNES one. Right and left are the buttons, not the right and left on the
- control pad. Do this at the start of the Capcom screen and finish it before
- the screen fades; when it works a tone will sound. This allows you to select
- a character versus himself.
-
- There is no code to let you play as the last four characters.
-
- The second secret code brings up the CONFIG menu: hold down the select button
- and keep holding it while you start the game. This allows you to change
- options in the middle of the game.
-
-
- ``What is the difference between the Japanese and American versions of SFII?''
-
- One background character's hand motions were changed in the US version to look
- less like masturbation.
-
- The bosses' names are also different on both arcade and home versions:
- USA Japan
- Balrog M. Bison (named after Mike Tyson)
- Vega Balrog
- M. Bison Vega
-
-
- ``What are the Ranma 1/2 games available?''
-
- Gameboy: two games. The first is a block moving/maze type of game, the second
- is a platform-type game.
- Super Famicom: two Streetfighter-II clone type games.
- PC Engine CD: there is an earlier punch/kick/scroll game (CD), and a more
- recent "video comic" game (CD); you need to know Japanese to play the latter.
- There is also a super-CD port of the Super Famicom game.
-
- According to EGM, Ranma 1/2 will be released in the USA for the SNES.
- The game will be retitled to Street Combat, heavily edited.
-
-
- ``What version of Might and Magic is available for the Genesis?''
-
- It's Might and Magic II, even though it's packaged without the number II.
-
-
- ``What are the Japanese Super Mario games which correspond to the US ones? I
- hear there was a Mario game in Japan that did not make it to the US.''
-
- The Japanese Super Mario 2 was a Famicom Disk System game which did not make it
- to the US. The US Super Mario 2 was a non-Mario Japanese game called "Dream
- Factory".
-
-
- ``Can you play Forgotten Worlds (Japanese PCE-SCD) on a TG-16, even though the
- controller doesn't fit?''
-
- Button I fires, button II is clockwise. You can have either SELECT or button
- III be counterclockwise, so you can play the game on a TG-16 if you don't mind
- using SELECT as an action button.
-
- The controller should fit on the Turbo Duo, since the Turbo Duo uses PC Engine
- type controllers (the regular TG-16 uses its own odd controllers).
-
-
- Section 5: What is a...?
- =======================
-
- ``What is "Blast Processing"?''
-
- Sega hype. The phrase means exactly nothing.
-
-
- ``What is anime?''
-
- Anime refers to Japanese animation. It tends to be aimed towards a more adult
- audience than American animation, and has a large cult following in the US.
- Historically, much anime has been brought over with heavy cuts and/or changes
- in plot, but companies have recently begun to release more accurately dubbed
- or subtitled anime. The connection with video games is that many Japanese
- video games are based on anime; furthermore, such games are often the least
- likely to be brought over to the US since Americans supposedly aren't
- interested in it.
-
-
- ``What is a Tera Drive?''
-
- It's a Japan-only system which combines a PC and a Mega Drive; it's not
- available in the US.
-
-
- ``What is a Wonder Mega?''
-
- It's a Japan-only system combining a Mega Drive and CD with a JVC CD system.
- It's not available in the US.
-
-
- ``What is a Super Gun?''
-
- It is a "home" system which plays a JAMMA arcade board at home. This plays the
- same as the arcade game, of course, but also costs about as much as the
- arcade game (over $1000 for Street Fighter II).
-
- The system itself is legal, but it's often sold with illegal, pirated, arcade
- boards.
-
-
- ``What is Valis I?''
-
- It is a Famicom game not brought over to the US. There are Mega Drive/Genesis
- versions and a Super PC-Engine CD-ROM version.
-
-
- ``What is Thunderforce I?''
-
- It is a game produced by Technosoft for Japanese personal computers.
-
-
- ``What is Phantasy Star I?''
-
- It's a Sega Master System (8 bit) game.
-
-
- ``What is Cosmic Fantasy I?''
-
- It's a Japanese PC Engine CD game, with no US release.
-
-
- Section 6: System Capabilities:
- ==============================
-
- [chart originally by Corey Kirk]
- ______________________________________________________________________________
- | | Neo Geo | SNES | Genesis | TG-16 | NES | Sega M2 |
- |----------+----------+----------+----------+----------+----------+----------|
- |Bits (CPU)| 8 + 16 | 16 | 16 | 8 + 8 | 8 | 8 |
- |Bits (Gx) | 16 | 16 | 16 | 16 | 8 | 8 |
- |CPU | 68000| 65816 | 68000 | HuC6280| 6502 | Z80 |
- |APU (Aud) | Z80| SPC???? | Z80 | | | |
- |MHz | 12.5, 4| 3.6 | 7.6 | 3.6 3.6| 1.8 | 3.6 |
- |Graphics | 320 x 224| 256 x 224| 320 x 224| 256 x 216| 256 x 240| 240 x 226|
- | -2nd mode| | 512 x 448|320 x 448*|512 x 262*| | |
- |Colors |4096/65536| 256/32768| 64/512| 241/512| 16/52| 52/256|
- |Sprites | 380 | 128 | 80 | 64 | 8 | 16 |
- | - size | 16 x 512| 32 x 32| 32 x 32| 32 x 64| 8 x 8 | 8 x 8 |
- |Audio | 15-lyr |PCM 8-lyr | 10-lyr | 6-lyr | mono | mono |
- |RAM | 64K+68Kgx|128K+64Kgx| 72K+64Kgx| 8K+64Kgx| 2K+ 2Kgx| ? |
- |----------+----------+----------+----------+----------+----------+----------|
- |CD CPU/MHz| none | ?/21 |68000/12.5| 65802/16 | none | none |
- |CD RAM | | 1024K | 768K | CD=64K | | |
- | | | | | SCD=256K | | |
- |----------+----------+----------+----------+----------+----------+----------|
- * Comment: many systems have tricks which can be used to squeeze more colors
- or resolution out of the system than normal. This often means that other
- features cannot be used--the SNES's 512x448 mode only allows 16 colors and no
- hardware rotation, and I suspect that the other modes on the Genesis and TG-16
- have enough limitations to explain why you don't see them used much. The TG-16
- also has a 482/512 color mode, which I suspect has similar restrictions. So
- don't expect to see most TG-16 games with 482 or even 241 colors.
- ________________________________________________________
- | | GameBoy | Lynx | GameGear | TExpress |
- |----------+----------+----------+----------+----------|
- |Bits (CPU)| 8 | 8 | 8 | 8 + 8 |
- |Bits (Gx) | 8 | 16 | 8 | 16 |
- |CPU | Z80 | 6502 | Z80 | 6502 6502|
- |MHz (CPU) | 2.2 | 4.0 | 3.6 | 7.2 |
- |MHz (Gx) | | 16.0 | | |
- |ScreenSize| 2.6" | 3.5" | 3.2" | 2.6" |
- |Graphics | 160 x 144| 160 x 102| 160 x 144| 256 x 216|
- |Colors | mono (4) | 16/4096 | 32/4096 | 241/512 |
- |Sprites | 8 | unlim | 64 | 64 |
- | - size | 8 x 8 | unlim | 8 x 8 | 32 x 64 |
- |Audio | 2-lyr | 4-lyr | 4-lyr | 6-lyr |
- |RAM | 16K | 64K | 24K | 8K+64Kgx|
- |----------+----------+----------+----------+----------|
-
-
- ``Does the Genesis CD-ROM have extra colors, sprites, or resolution?''
-
- No. Gamepro magazine said otherwise one issue; this was an error. They
- corrected it later on, but then said it _again_ in an article that sounds like
- it was partially cribbed from the earlier one....
-
-
- ``What is this megabit stuff? Isn't it supposed to be byte?''
-
- 1 byte is equal to 8 bits, so an 8 megabit game is really 1 megabyte. (Also,
- ``mega'' for computers is 1048576, not an even million). This started when
- Sega advertised ``mega cartridges'' for the Sega Master System several years
- ago to make the games sound bigger, and may also have to do with the fact that
- some memory chips are indeed measured in bits.
-
- Old Neo-Geo ads claimed "megabytes" for their games, which was a lie.
-
-
- ``I've heard of a 32 bit game system....''
-
- Various game systems have been rumored to be 32-bit, such as the as yet
- unrevealed Atari system. You can't just add the bits in the separate
- processors and get a meaningful number, though, so the Sega CD-ROM is not a
- 32-bit system even though it has two 16-bit processors. (Similarly, a Neo-Geo
- isn't a 24 bit system.) There are several different characteristics of
- processors which measure in bits; whether a processor counts as a 32-bit
- processor or not may depend on what you consider important. (A 32 bit
- processor might be one which has a 32 bit address space, performs operations on
- 32 bit quantities, or has a 32 bit wide bus).
-
- The "number of bits" in a system is not terribly useful anyway. Keep this in
- mind before complaining that the SNES doesn't really have a 16 bit processor;
- unless this affects the games, it makes no difference, and if it _does_ affect
- the games, you should just directly talk about the games instead of the bits.
-
-
- Section 7: Compatibility:
- ========================
-
- FAMICOM: Same as NES. Adaptors reportedly exist.
-
- FAMICOM DISK SYSTEM: No US counterpart. (People kept copying the disks.)
-
- SUPER FAMICOM: Same as Super NES. The European or Australian, and the
- American or Japanese, versions aren't compatible because of lockout chips; but
- you can buy an adapter which takes two cartridges and uses the lockout chip
- from one and the program from the other, letting you play the games (either
- way). Games run faster on US machines and slower on European ones.
-
- For American/Japanese games, the cartridges are shaped so as not to fit in
- each other's machines. If you cut away the plastic that prevents them from
- fitting, or if you buy an ``adapter'', you can play them... so far.
-
- There is some kind of little-understood hardware difference between machines.
- One Usenet reader noticed that on Super Adventure Island, Master Higgins
- appears upside down on an SF and right side up on an SNES. However, a letter
- to VG&CE magazine asked about a similar effect that happened with that game on
- two machines, both of which were SNES. There is clearly some difference, but
- nobody knows if it's just a new/old difference which occurs in both countries,
- or if it's something that applies _only_ between Japanese/US machines and is
- therefore potentially useful for lockout.
-
- One usenetter called Nintendo and was told that newer machines (Japanese/US)
- weren't compatible. This is also reported by game magazines and seems to be
- an official answer. Nobody knows if it's true, and nobody's actually found
- games that fail. (The closest was someone who bought some pirated Taiwanese
- games, only some of which worked.)
-
- PC ENGINE/COREGRAFX: Same as Turbografx-16. Cartridge games are not
- compatible, but you can buy adapters for $20-30 through many mail order places
- (get a game magazine and check the ads). CD and SCD games are compatible
- without adapters; the Super CD-ROM expansion (3.0 card plus 256K memory) will
- itself work in a TG-16 with CD and adapter.
-
- Some of the existing adapters are not shaped so as to fit in a Turbo Duo. Find
- one that fits, or do some cutting....
-
- There is a hardware difference in the two machines, which can be read by
- cartridges. Most TG-16 cartridges check it, and therefore won't work on a PCE
- even with adapter. (Exception: Night Creatures works.) All known CDs work
- both ways, and all known Japanese games work on a TG-16 with adapter.
-
- The Altered Beast CD does not work, but that's because of an incompatibility
- with the CD system version; it won't work on a PC Engine 2.0 or SCD either.
-
- Note: The CD-ROM2 is the counterpart of the CD, not the super-CD. Why it's
- named 2, I have no idea; maybe because the system is version 2.0.
-
- SUPERGRAFX: No US counterpart. (The Supergrafx is an enhanced PC Engine and
- can play PC Engine games without modification, though of course these are hard
- to get in the US.)
-
- MEGA DRIVE: Same as Genesis. Compatibility is a bit tricky.
-
- The European and Australian machine called the Mega Drive is (except for
- putting out PAL signals) identical to the Genesis, and all comments below
- which refer to the Genesis, not to the Mega Drive, apply to them. Converted
- Japanese machines are popular in Europe; these often have permanent English
- language modifications (and act like a Genesis with respect to compatibility.)
-
- If you want to play a game on the "opposite" machine, you have to cut out some
- plastic around the cartridge slot on a Genesis. On a Mega Drive, you _might_
- have to remove the cartridge lock (I didn't, but some people have told me they
- had to). The cartridge lock is the plastic tab that pushes into the slot from
- the left side when you turn the machine on. There are also adapters which
- alleviate the need for cutting things. Some games are bilingual, and play in
- Japanese/English depending on which machine you use them in; the list is below.
-
- The Mega Drive games Rolling Thunder II, Thunder Force IV, and Super Monaco GP
- 2 won't play on a Genesis unless you install a language switch (see below).
- The Genesis game Dragon's Fury won't play on a Mega Drive without a language
- switch (though the MD version, Devil's Crush MD, works on both machines).
-
- For the CD-ROM, there will be 4 different versions: American, European,
- Japanese, and Asian. There are two compatibility problems:
-
- The first is that the origin of the CD drive and the origin of the disk must
- match. You can get around this by replacing the ROM containing the operating
- system with one from another country. (Whether or not this is possible
- without piracy, I don't know. Maybe someone will even make bootleg ROMs that
- play any disk.)
-
- There are conflicting reports about the second problem. The way the story goes
- is that a Japanese CD player does not work on a Genesis, but this problem
- happens only if the Genesis is a new one. The language switch fixes the
- problem. This (minus the language switch information) has been described in
- game magazines, but there have been contradictory reports on Usenet. Perhaps
- the problem only happens for certain games, or perhaps alternatively a
- mismatched system/player combination only works at all for certain games.
-
- It is definitely known that the American CD player won't work on a Mega Drive
- (unless language-switched, of course).
-
- There are bilingual Japanese CD games, with two versions depending on the
- language switch. (Of course, if you want to see both versions you'll need an
- old Mega Drive, if it's true that a new machine only works at all on one
- language setting.)
-
- (The excuse for incompatibility, as reported in EGM, is that cartridges don't
- use music or footage from licensed properties, but CDs do, and licensing might
- only apply to limited geographic areas. Needless to say, cartridges _do_ use
- music, and at least digitized pictures from, licensed properties. Nor do the
- compatible PC Engine/TG CD's, or for that matter regular music CDs or laser
- discs, seem to have this sort of problem.)
-
- SEGA MARK III: same as and compatible with the Sega Master System.
-
- NEO-GEO: same as and compatible with US version.
-
- GAMEBOY: same as and compatible with US version.
-
- LYNX: same as and compatible with US version.
-
- GAME GEAR: same as and compatible with US version. The Japanese TV tuner,
- however, works on Japanese TV frequencies, some of which differ from US TV
- frequencies.
-
- PC ENGINE GT: This is the equivalent of the TurboExpress, and runs PC Engine
- games. The same adapter that plays PC Engine games on a TG-16 will also play
- them on a TurboExpress.
-
- MISCELLANEOUS: The "Master Gear" adapter plays Sega Master System games on the
- Game Gear. The games will not run at the correct speed if the game is from a
- country where TV uses PAL (i.e. Europe). Adapters in reverse are probably
- possible, but I haven't heard of any.
-
-
- How to make a language switch (Genesis/MD).
-
- On a Genesis/MD, there are jumpers labelled JP1, JP2, JP4, and JP3. The Genesis
- has a capacitor on JP1 and a trace on JP2; the Mega Drive has a capacitor on
- JP2 and a trace on JP1. The bottom ends of JP1 and JP2 are connected together.
- So if you cut the trace and the top end of the capacitor, and install a DPDT
- switch between them which reconnects them either unchanged or swapped left to
- right, you have a language switch. You'll need some wire, a soldering iron,
- solder, and a DPDT switch.
-
- [I DIDN'T TEST THIS]: Some machines have an open circuit instead of the
- capacitor. Also, I have been told that even on machines with a capacitor, you
- can throw it out and leave an open circuit. In either situation, the switch is
- a lot simpler, requiring a SPDT switch and less wire and solder.
-
- JP3 and JP4 can be similarly swapped for a 50/60 hz switch.
-
- The language switch lets you choose between English and Japanese mode on games
- with dual-version ROMs, and lets you play the Japanese versions of Rolling
- Thunder II, Thunderforce IV, and Super Monaco GP 2 on a Genesis, or Dragon's
- Fury on a Mega Drive.
-
-
- Genesis/Mega Drive dual version (language switch) list:
-
- Bonanza Brothers: Game plays in Japanese.
- Columns: Instructions are in Japanese.
- *Cyberball: Japanese version has a modem option.
- Dragon's Fury: This game does not play at all on a Mega Drive, giving a
- message about how it's not intended for use in Japan. (The Japanese version,
- Devil's Crush MD, does play on either system.)
- Dynamite Duke: Harder on the Mega Drive.
- Elemental Master: Harder on the Mega Drive.
- Fatal Labyrinth: Game plays in Japanese.
- Fire Shark: Different title screen with Kanji.
- Flicky: characters have Japanese names and instructions are in Japanese.
- Forgotten Worlds: Text is in Japanese.
- Gaiares: only mentions the Japanese licensee on the title screen, and has
- Japanese text; you can also select Japanese text from the option screen.
- Ghostbusters: The Ghostbusters speak Japanese.
- Ghouls and Ghosts: Different title screen with Kanji. To see it on a
- Genesis, select the last music and sound (26 and 56) from the options screen,
- then press lower left; A, B, or C; and Start all at the same time. (I never
- tried this, but Gamepro magazine claims it works.) The game shows some other
- Japanese text, and when you die during a boss you start out earlier.
- Insector X: Title screen refers to company as Hot-B, not Sage's Creation.
- The MD version shoots more slowly. Ending text for the game is still in
- English.
- *Marvel Land: The Japanese version says "for Mega Drive" or "for Genesis"
- but the language stays Japanese. Presumably the English version does the same
- in English (can anyone confirm this?)
- Mystic Defender: This game is actually the anime-based Kujaku-Oh (Peacock
- King) 2 game. In Japanese mode, the opening text is replaced by a graphics
- screen (never seen in the US version) with Japanese. The levels have names,
- the main character wears a white robe, the lightning magic effect is different,
- and the character is named Kujaku in the ending text (which is still English).
- Outrun: The attract mode lacks sound, the startup screen says "push" (not
- "press") start button, and "(C) Sega 1986, 1991" is printed in reverse order.
- The default options are KM/H and a different button selection (but can still be
- changed on the option screen).
- Quackshot: Text is in Japanese.
- Raiden Trad: The "licensed to Sega" line is absent on both title screens,
- and the second title screen includes only the Japanese part instead of the
- non-Japanese part of the first one.
- Revenge of Shinobi: Title screen changes to Super Shinobi, and credits are
- shown at the end.
- *Rolling Thunder II: The Japanese version only works on a Japanese setting.
- Streets of Rage: Title screen changes to Bare Knuckle, and all text is in
- Japanese, including the introduction. The clock resets when you encounter the
- bosses.
- *Super Monaco GP 2: The Japanese version only works on a Japanese setting.
- Thunder Force II: Title screen has "MD" on it, and company name is
- "Tecnosoft".
- Thunder Force III: company's name is spelled "Tecnosoft".
- *Thunder Force IV: The Japanese version only works on a Japanese setting.
- It's reported that playing the game on a machine in an intermediate state lets
- it be played, but brings up a message saying it's licensed for Genesis.
- *Thunder Storm FX (CD): Turns to Cobra Command when set to US.
- Truxton: Turns into Tatsujin. (What does this mean?)
- Twin Hawk: Different title screen with Kanji.
- *Wrestle War: The wrestler is blond on a Genesis and black-haired on a MD.
-
- * Information obtained by testing a Japanese cartridge
-
- In addition, most games with a standard "Sega TM" screen omit the TM when
- played in Japanese mode, even if the game isn't otherwise bilingual.
-
-
- PC Engine/TG-16 pinout.
-
- This information was posted by David Shadoff (david.shadoff@canrem.com)
- and is mostly verbatim:
-
- Notes:
- (1) For reference, pin 1 is the short pin (on the left, if the card
- is to inserted forwards), pin 38 is the long pin on the right.
- (2) * - means I think this is what it is
- ** - means I don't know
- (bar) - means it is an active-while low condition (usually denoted
- by a bar over top)
- (3) I'm telling you all I know (which really isn't much), and it may
- contain errors, also - I will not be held responsible for errors
- in this list. (or any damages resulting from the use of, or
- inability to use, this information, etc...)
-
- Pin Use
- --- ---
- 1 ** 20 D4
- 2 ** 21 D5
- 3 A18* 22 D6
- 4 A16 23 D7
- 5 A15 24 CE (bar) - chip select
- 6 A12 25 A10
- 7 A7 26 OE (bar) - output enable
- 8 A6 27 A11
- 9 A5 28 A9
- 10 A4 29 A8
- 11 A3 30 A13
- 12 A2 31 A14
- 13 A1 32 A17
- 14 A0 33 A19*
- 15 D0 34 R/W (bar over W) - read/write
- 16 D1 35 **
- 17 D2 36 **
- 18 Gnd 37 **
- 19 D3 38 +5V
-
- It is interesting to note that pins 6 thru 29 are basically exact
- duplicates of the functions of pins 2 thru 25 on a 2764 EPROM.
- Obviously, the design of the chip's die was not a complete re-work;
- it just sits on a different package.
-
- I got this information from tracing address- and data-paths through
- the PC-E to the 2K static RAM (which has a known pinout), and
- extending that information by reviewing an NEC data book on their
- 1-Megabit factory-programmed PROM's (it's an old data book, so I
- couldn't go any further).
-
- The TG-16 differs from the PC-E in that the D0-7 datalines are
- reversed (actually, the PROM is programmed that way, and the wires
- leading to the data bus in the machine are reversed). I have
- shown here, the card pinout (which does not differ). I believe
- that this is the PC-E port pinout (TG-16's just reverse the data
- lines' order; swap 0 for 7, 1 for 6, 2 for 5, and 3 for 4).
- -
- Additional information: to copy a TG-16 game to work on a PC Engine with
- copier, reverse the bit order. There is then a sequence of code which checks
- what machine the game is running on: all known examples start with 78 54 A9,
- have the letters NEC at offset 15 hex, and an F0 at offset 0B. If the F0 is
- changed to an 80 (changing a conditional jump to an unconditional jump), the
- game will work on both PC Engine and TG-16.
-
- This code sequence is usually at the start of the game, but can be in other
- places.
-
-