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GB97.FAQ
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1997-07-01
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Frequently Asked Questions about Gameboy 97
===========================================
1. Where do I get the latest release ?
The latest version is always available from the home page
[http://users.aol.com/autismuk/gameboy.htm] ready to download.
It contains all the necessary files to run Gameboy 97, except
ROM Images. You can also check EMUNEWS
(http://users.aol.com/emunews) for the latest information.
2. Why doesn't the joypad work properly ?
There are timing problems in the Joystick code which aren't yet
fixed. These have been temporarily fixed by using the BIOS
Joystick Function (versions > 2.830). If you get really stuck
use JoyEmu and disable the joypad (set address to zero). This
does work !
3. How do I put in Game Genie codes
Miss the 8th digit out. It's a carry on from an original error.
so 4A4-249-705 would type in as 4A424975 and it would display as
4A42497_5. The 8th digit is a checksum of some sort, I think.
This idiocy is entirely the fault of the programmer.
4. How do I make game 'xxx' work ?
Check to see if the cartridge length is valid (should be 32768,
65536,131072,262144 or 524288). If not, the cartridge may be
corrupted. Try changing the values in Config especially the
'No recursive Interrupt' or extending the 'Mode 11 Cycles'. If
the screen goes off & freezes , try turning 'VBI when off' on.
If there's a hack available, try that. There's a list of games
on the homepage.
5. I've tried all that and it still doesn't work. What do I do next ?
Look it up on the homepage http://users.aol.com/autismuk/gameboy.htm
which has fixes for known games. If that doesn't work
email me at autismuk@aol.com describing the problem and I'll try
and sort it out. Note : NOT Final Fantasy Adventure OR Snow Bros
which I'm still trying to figure out. Don't send me Rom images, if
I need the image I'll ask for it. Games tend to fall into the
easy to fix or complete bastard categories.
6. What does the painter do ?
A Gameboy has 16 screen elements - the background, the window and
two sprite palettes. The painter allows you to colour the various
bits (each element has 4 sub-elements) in various colours to produce
a Super Gameboy effect. Play with it for a while, you'll get the
idea quickly.
7. I've got a screen full of numbers... help !
You've entered the debugger by mistake. Press key F10. This is
a developers tool. If you don't understand it, you won't need
it.
8. How do I suggest improvements ?
Email them to autismuk@aol.com. All suggestions, where legally or
morally possible are welcomed. Make sure you have the latest
version - what you want may already be available.
9. Game 'xxx' works on VGB but not on Gameboy 97
Let me know ! AFAIK there are now no games in this category. The
maintainer of VGB and I are sharing information and ideas for
fixes, so we hope to keep both GB97 and VGB as accurate as
possible. If you are maintaining another VGB version and don't
use Hans's source let me know if you want some assistance with
bug fixes. I am a great believer in 'friendly competition'
between emulator authors.
10. Will Gameboy 97 always be free ?
Yes, unless someone offers me a large amount of money for it ! I
have no intention of it becoming shareware.
11. What is Config for ?
To set up various things about how the emulator works - colour
schemes,keyboard definitions etc. 99% of cartridges will run
quite happily without being configured.
12. When will the source be available ?
I haven't yet decided whether or not to release the source.
When it is available I will post to comp.emulators.* and email
emunews.
13. Where do I get ROMs ?
Don't ask me... look on the WWW - try searching emulator pages.
There are 2 games available on the net freely - the Yar's Revenge
demo by Genetic Fantasia and Norman Nithman's Tic-tac-toe.
14. Will Gameboy 97 be available on other platforms ?
No. Its all in 32-bit assembler, so it would be a bit of a
nightmare to port. Having said that, there is a possiblity of
a Linux port, and an OS/2 port. Basically , only i386 machines.
15. I'm writing an emulator. Can I ask for help ?
Yes. I would recommend reading Marat Fayzullin's and Dr Pan's
documents first as they contain mostly accurate technical information
about the Gameboy. The latest Dr Pan document can be obtained
from Jeff Frohwein's Gameboy site, which is an excellent source
of Gameboy information.
16. When will Super Gameboy support be available ?
When I've figured out how it works. The painter and background
fulfil most of the functionality of the SGB.
17. Why are there so many different versions ?
When I do any sort of useful update, I release it. There are
currently about 6 or 7 versions that have been uploaded, but
the current version is always available on my web page.
18. How do I design a background ?
Use paint. Set up a 320x200 image (Image Attributes) and draw
your picture. If you start with the provided image the 'hole'
for the display will always be in the right place. Save it as
a 256-colour bitmap (a 16 colour one won't work...)
Note : When it says use Paint it means Windows App Paint, not
physical paint....
19. How do I use VGB colour schemes ?
Use the TRANS program to convert your .CFG to .C97 files, either
by TRANS which converts all files in the current directory or
TRANS <filename> to convert individual files. Hans changed the
way the CFG files work at some point, so not all CFG files will
translate. I grabbed a batch off the WWW though, and they seemed
to work ok.
20. How do I remap joystick buttons ?
Use JoyEmu which allows this, with some fiddling. Set the joystick
address in config to zero.
21. My screen goes mad when I press the / key
Your monitor cannot support 180 x 144 mode. Don't use it !