You need to play it in an emulator (such as SPIN or Spectaculator) with the Fuller joystick attached. The game assumes that there is one, and the lack of one combined with floating bus behaviour produces that effect.

D.

... /+3 don't have a floating bus effect so you'll always ...

... only puts bits on the bus when you press a button ... of screen and attribute bytes (floating bus effect).

[quote]

Looks like the game ignores the keyboard if a kempston is attached.

So you either need an emulator with kempston joystick support or, for keyboard, an emulator that gives floating bus behaviour on port 31.

... keyboard, an emulator that gives floating bus behaviour on port 31.
bus floating over port 31. It will ...

Btw, for an explanation of the floating bus, visit [url="http://www.ramsoft.bbk.org/floatingbus.html"]http://www.ramsoft.bbk.org/floatingbus.html[/url]

:)

IIRC Cobra and Arkanoid will fail due to lack of floating bus.

Several more will come to mind again given time...

... it doesn't have the floating bus. I have tried > 400 ... doesn't work because of floating bus + port conflict trouble. It reads ...

Sidewize (floating bus again).

Other than ...

... interested in ultra-precise stuff (floating bus, contended memory), but I want ...

... bit vector on the bus. Presumably it does ... 2 because placing an instruction opcode on the bus ... instruction / vector on the data bus.

I ... chain to settle) + 2 automatically inserted wait states ... / RST on the data bus) + 2 cycles of refresh.
...

You may wish to see Ramsoft's "Floating Bus Explained" document for a thorough explanation of what's going on with reads from unattached ports.

... .

[quote]
4. Floating Bus implementation. I use this to ... can test an emulator's floating bus emulation accuracy using Ramsoft's ...

... (doesn't do multicolour or floating bus though), and so are the ...

... (doesn't do multicolour or floating bus though), and so are the ...

[quote]
On 2004-08-28 21:23, GOC wrote:
Well, the emulator itself is functional (doesn't do multicolour or floating bus though), and so are the most of the main debugging functions
[/quote]

Any chance of a look at this?

... (doesn't do multicolour or floating bus though), and so are the ...

Cobra and Arkanoid spring to mind due to the floating bus issue.

D.

There was a version of Cobra on a Plus 3 compilation disk: The Magnificent Seven, which must use some alternative to the floating bus.

Derek

Just checked. The version of Cobra released by the Hit Squad doesn't use floating bus.

... to mind due to the floating bus issue.[/quote]
There are ...

... 'd, but I use the floating bus to do it. I guess ...

[quote]
On 2004-10-07 17:13, dmsmith wrote:
It is sync'd, but I use the floating bus to do it. I guess you must be using either SPIN or ZX32.
[/quote]

There's nothing wrong with SPIN's floating bus emulation.

Yeah, you're right. Seems the latest version on WoS is still v0.41, and that has a pretty poor implementation of the floating bus.

You're not missing anything. Dunny accidently built at least the last couple of releases using the old contention/floating bus code. Believe me, your game does not flicker at all when built with the correct source :)

... back anything which used the floating bus, etc.

Woody and ...

... depend on things like the floating bus effect still won't work ...

... difference that implies (timings, no floating bus, etc).

What problem are you having?

Port $FF is an unattached port - it will reliably return $FF on a read in +2a/+3 hardware, and floating bus results for any prior models.

D.

... to say the least. The floating bus, iirc, got broken somewhat in ...