10 minute after he's left, he'll realise what the problem is

Actually, no you won't. If you'd looked at the disassembly, you'd have seen:


...
ldrsh r0,[r4,r0]
...


So, congratulations, you've found yet another bug in AS.

- where are you btw, or rather for how long?

Do you mind if I make a web site for PicoDrive?

BTW, micro machines doesn't work yet.

I guess it needs some more of the hardware to be emulated or something.

Enabling Z80 in sound settings will improve compatibility (you don't have to enable anything else, only Z80), because some games need it to run. But it slows emulation down, so turn it off if the game doesn't need it and you don't want sound.

plus fixes a couple of APCS violations that either didn't know about or hoped he could get away with

Load/save support is already supported by the emulator, we just don't have any frontend stuff to operate it. Although if there's a cross-emulator savefile format then we'd probably need to examine some other code to get that working.

http://picodrive.atspace.com/ and
http://notaz.atspace.com/index.html

Emulation stuff:

1. Saving progress (needed for RPGs and some action games like Sonic 3
   support saving on the cartridge)
2. Z80 Emulation
3. Sound generator thing
4. Support for the other joypad buttons X, Y and Z (Needed for Street
   Fighter and a few others)

RISC OS stuff:

1. Fix window and scaling so it's the size of the display (320x240 or
   640x480 with equal black borders for now at top,bottom,right,left
   as needed to pad out any spare space)
2. Speed throttle, needed on Iyonix
3. Allow sound to be toggled on and off
4. Config file that can be edited in an editor for default scale,
   sound on/off, joypad button config, keyboard button config
5. A way to pause emulation and use the rest of the desktop at full
   speed, before returning to the game
6. Make sound sound better (currently distorted)
7. Full screen mode (can have default settings in config file. i.e.
   320x240 at 100% or 640x480 at 200%.)
8. Menu for setting scale, sound and other options. Also option to
   save sprite of screen.
9. Make sound let other apps make sound that the same time
10.Iconbar icon
11.Choices GUI

General:

1. Faster 

When it's run without a ROM, there could be a text interface to select a ROM, overlayed on the dark bit of the title screen. The list is generated by listing all the ROMs in a ROMs directory (set in the config file) and one is highlighted. It just uses the filenames. Up, Down and Start can be used to select and launch a ROM. Escape could return to the ROM list. Escape at ROM list closes the window. I'll make a mockup image.

I think Plamethrower has stuff to do bitmap fonts and stuff like this.

Are there any deficiencies in the VDP emulation, or elsewhere in PicoDrive that you know about and haven't mentioned? I'm only aware of the maximum number of sprites not being emulated and hence Sonic appearing in front of the title scroll; something that I'm sure could be easily fixed.

Yes I've seen a few things like baddies randomly appearing on the screen in Sonic and some strangeness with sprite plotting. Games are generally playable but aren't emulated 100% correctly.

Going though this list of screenshots:

http://www.squish.net/generator/shots.html

We get the Ecco line shifting right.

Sonic title screen wrong 'cos of max sprites limit not being emulated

Sonic 2 title screen wrong (characters on top of logo as they come in). Apparently because sprite priorities aren't correct.

Sonic 1 Marble Zone wrong (fireballs behind the grass so only the tops of them show). Another sprite priority thing where the foreground sprite should get cut out.

Wolfchild looks fine in PicoDrive (never played it before, so I'm just going by their screenshot).

Travellers Tales logo is not right in PicoDrive (see Sonic 3D). Apparently it's highlight/shadow features.

Not checked the 2nd Ecco screenshot yet.

The reason I asked is that I was looking at the Z80 and PSG emulations in Generator last night and I think they could be easily merged into PicoDrive, but I was wondering whether that's the best approach - perhaps moving Cyclone into Generator would make more sense? (Haven't looked at that yet.)

OK. I better research whether Generator is the best candidate. It's not been updated for a few years. I think others may have passed it.

Vauge priorety list:

I think Plamethrower has stuff to do bitmap fonts and stuff like this.

Vauge priorety list:

All except the Z80 emulation can be easily done now. (Although I'd need to find out what memory locations etc. the X,Y,Z buttons need mapping to)

I think Plamethrower has stuff to do bitmap fonts and stuff like this.

Yeah, that stuff is easy.

We also need to add support for whatever it is that's stopping Micro Machines 2 from working (the copy from romhustler comes as 5 ROM files, so presumably something like SRAM banking will fix it. And the Z80 emulation!)

Also I think the different Micro Machines ROMs are not different parts of one ROM, just different versions of it and each one is a full game.

BTW, Micro Machines '96 Tournament is the best version. It's Micro Machines 2 + more levels + track editor.

I did initially think that, but it seems a bit small. The PC version (of Turbo Tournament + various other levels) is 22.5MB. And then there's half an hour of CD music (Which I'm guessing the MegaDrive version won't have )

I dunno what the PC version sounded like.

BTW, Micro Machines '96 Tournament is the best version. It's Micro Machines 2 + more levels + track editor.

Yeah, that's probably the one I want, since that's the one I have the PC version of.

BTW, Micro Machines '96 Tournament is the best version. It's Micro Machines 2 + more levels + track editor.

Yeah, that's probably the one I want, since that's the one I have the PC version of.

Actually, it's the MM2 special edition that I have for PC. It has the same tracks & drivers etc. as MM2, but with the construction kit and 50 extra tracks designed by the players. Compared to the MegaDrive versions it also has more colours (e.g. the pool table is green instead of pink ), 4-player mode, better sound effects, race commentator bloke (who is also helpful on some tracks for pointing out when corners are coming), the CD music when racing, and some wav's/backdrops for use in windows.

The pool table on the MegaDrive was green.

Also the MegaDrive version has not only four player but 8 player support.

Also the MegaDrive version has not only four player but 8 player support.

All at the same time?

Also, there was a tournament mode for 16 players, but not all play at once.

Project #3: Improve the movie playing capabilities of RISC OS

Or should we just resume waiting for Cino/Cineroma?

This. I don't feel like trying to get 42MB of source code working

This. I don't feel like trying to get 42MB of source code working

So how big do you think the Cino source is?

Which must mean that Cino is a port of mplayer

Adrian, is the Cino project still paused?