Psyclotron

[Wrathchild]

Following up on this thread:

 

I had made a 5200 port of this title back in May 2017 but obviously sat on it until permission to share given.

 

Having revisited this, there is an issue where the key-presses are not responded to due to a nesting of vertical-blank interrupts blocking the key interrupt.

However this doesn't really detract as you can launch a single player game using the fire-button.

 

Enjoy,

Mark

psyclotron_5200.car psyclotron_5200.rom

[Tempest]

Thanks for doing this.  Did you use the latest version that Dutchman posted or the first one?  Did you see any differences in them at all at the code level?

[Wrathchild]

I'd made my own IDA Pro disassembly from the xex supplied in 2014.

In 2017 I'd received the sources but the compiled binary from that is identical.  

[Tempest]

47 minutes ago, Wrathchild said:

I'd made my own IDA Pro disassembly from the xex supplied in 2014.

In 2017 I'd received the sources but the compiled binary from that is identical.  

Which sources are you talking about?

[Wrathchild]

15 minutes ago, Tempest said:

Which sources are you talking about?

PM'd

[RB5200]

This is pretty cool, I like it,

but it does crash kinda fast, not sure yet if it's crashing on its own, or from something in gameplay.

[Wrathchild]

There may well be some issues with the 5200 port as never released to testers, and from what I've seen with the interrupt nesting (VBI in an overunning VBI) could lead to stack problems. If anyone can grab/screenshot emulator cpu history traces then that could help me pinpoint things. 

[Aking]

great game for the cx52!