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README.1ST
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Text File
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1994-11-01
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5KB
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120 lines
ABSTRACT:
This file is to inform you on some bugs or "features" we know are still in
the code but hadn't had the time to remove yet.
Hello MSX freaks,
Let us start with a very important remark:
┌─────────────────────────────────────────────┐
│ THIS IS NOT YET THE COMPLETE MSX-2 EMULATOR │
└─────────────────────────────────────────────┘
It is a MSX-1 emulator with a lot of features, some of them MSX-2ish.
For starters you can use MSX-2 ROMs to boot the emulator and it'll show
the MSX-2 logo, but as you can see the V9938 (MSX-2 video chip) support is
not finished yet (the text beneath the logo doesn't appear yet).
Our own code has better V9938 emulation but it's not that stable so you
have to put up with a emulator that only boots the MSX-2 ROMs but can't
use them completely (there's no WIDTH 80= 80 columns mode for instance).
This MSX-1 emulator is an extract of the sources of the MSX-2 emulator
we're building right now. We decided to release this beta version so can you
see what we've done so far. It's also possible that there are some bugs
present, hence the beta release. We where put under some pressure because
we wanted the emulator to be included in a CD-ROM release. That's why we
haven't had the change to put it through VERY thorough testing as we planned.
But now you can help us test it on many different computers/configurations and
maybe come up with suggestions.
This emulator is also no longer Public Domain. We've decided to make it
ShareWare for obvious reasons: we've spent endless hours (nights) programming
the emulator and also bought some hardware. We'd like to see that at least
the money we spent on the development of the emulator returns to us.
Read the section in the manual about registering and remember the part that
you get the MSX-2 emulator for
FREE
if you register. We also promise that this emulator will be as perfect as
possible so you already get what you paid for. Note number one concerns the
registration: we haven't figured out yet how to receive money from outside
the Europe without loosing almost all on transfer costs and alike. Any
ideas are welcome.
Important notes/known bugs/"features"/not supported (almost all of this will be
fixed in the next release):
■ The documentation (MSX1EMUL.DOC) isn't complete yet. Almost, but some
things are missing (not important things though)
■ Sometimes when a program crashes in the emulator it's better to exit the
emulator with F12 and start it again
■ The keyboard is fixed on a international or USA keyboard layout.
We're busy programming a configuration program that let's you edit
keyboard layouts and drive mappings
■ Magnified sprites (bit 0 in VDP register 1)not implemented.
Nobody seems to use them, but version 1.0 will emulate them too
■ C flag (bit 5 of VDP status register) and number of fifth sprite (bits 0-3
of VDP status register) not implemented
No problems reported yet with this
■ Not implemented video modes give a blank screen
Like e.g. SCREEN 0, WIDTH 80
■ Sound emulation is not completely finished:
■ There's no GUS (Gravis UltraSound) support (we're planning it)
■ PSG envelopes won't work
■ PSG volume control is not logarithmic
■ No FM-PAC emulation
■ Incomplete MSX-AUDIO/Philips Music Module support
It also tends to crash sometimes
■ SCC emulation doesn't support samples and it doesn't sound like we would
want it to
■ Tape support not finished yet
■ Joystick support not finished yet
■ Mouse support is not 100%. When using the BIOS or programs that read the
mouse like the BIOS it works, but some programs don't work
■ The emulator seems to crash with certain mouse drivers in certain
configurations
■ When running the emulator at 100% speed something goes wrong with PLAY
in BASIC. Running the following program will slow down the emulation when
the play queue gets full:
10 PLAY "V15L32abcdefg"
20 GOTO 10
■ The emulator emulates a V9938 video chip. When using the MSX-1 ROMs (they
assume there's a 9929 video chip) some programs may acts strange.
Using MSX-2 ROMs may eliminate the problem
■ We also noticed that some programs do work with MSX-1 ROMs but don't with
MSX-2 ROMs. Motto: try both if you are desperate running a certain program
And last but not least:
We're looking for MSX BBS's, clubs, sites, addresses etc to include in
the documentation. If you have any information mail us:
Main support BBS:
Filosoft/PROGRAMMERS BBS
The Netherlands (Europe)
Sysop: Albert Siersema
(+31)50-412288 upto 14400bps (V42)
(+31)50-426071 upto 2400bps (also V.23: 1200/75)
Dutch readers: 050-412288 or 050-426071
FidoNet : 2:282/517
InterNet: prgbbs.idn.nl
FidoNet:
Albert Siersema at 2:282/517
InterNet:
appie@prgbbs.idn.nl
Our address is:
Ronald Gorter
Kleine Bergstraat 31
9717 NA Groningen
The Netherlands