Chrysalis - Icon not working on BeebEm414 or MMC

[CMcDougall]

Chrysalis - Icon not working on BeebEm414 or MMC
after this was mensioned on the High score comp, I had not played for ages since having on tape
but does not work from the STH beeb.MMB file (disc IC1-r1-0) or any of my actual machines
so tried it on BeebEm414, same, but on bEm22 it does work

the .SSD is below linky:
http://www.stairwaytohell.com/filesearc ... rch=Search

anyone know why it hangs when game loaded, then press Space to play, screen goes all cyan colour, then nothing

[CMcDougall]

found another version, & it works

[billcarr2005]

Strange... the only difference that matters in the fixed version is

Code: Select all

1C3E LDA #&0E instead of LDA #&40
1C40 STA &FE6B

Also changes *FX200,3 to *TAPE too.
Still doesn't seem to be BBC Master compatible, perhaps because of the end of the interrupt code it wants to go to &DC93?

[CMcDougall]

on M128 it sticks at same bit as non STH working version...
tried on B+ mode, gets a little further, but spits out Bad Program all down screen...

must be a OS1.2 call somewhere

[billcarr2005]

DC93 --> Main IRQ Handling routines, default IRQ1V destination

from http://mdfs.net/Docs/Comp/BBC/OS1-20/DC1C

[CMcDougall]

Just tried this on my actual beeb, still does not work from MMFS1.39

put it back to disc, does not work
*UNPLUG 'MMFS' , now works from disc
something going on, must be when music starts it hangs

[pau1ie]

I realise this is probably not what you want, but you can play Chrysalis online at bbcmicro. Lee will have tested it on a real BBC B, so it will work on that as well.

[Michael Brown]

It was some time back when I too noticed that the game did not work under BeebEm, but did work on B em.
Even the uef image did not work under BeebEm.
I found that changing the contents of &1C3F from &40 to &0E got around this problem, but I don't know why, it just did!
Maybe someone can explain.

Also I had to change the graphics in the loader as the name was spelt wrong. How could Icon release a game with such a error in the name?

Mick.