Converting RallyX to New RallyX

[guddler]

[ukvac] Converting RallyX to New RallyX
Can anyone confirm for sure (preferably because they've done it)
whether going from Rally X to New Rally X is just a rom and prom swap
please?

I'm reasonably sure it is but since there's more than just a couple
proms involved and i really don't have enough as it is i'd prefer to
know for definate before i just experiment and try it.

Failing that, has anyone made any rom to prom conversion pcb's? Ie,
use a fast rom in place of a prom on an adapter?

I know leopardcats has an article on using a GAL to do this but that
doesn't really help me since i traded my Galep4 with him and now i
can't do GALs!! - Doh!

Ta,
Martin.

 

[robotronuk]

RE: [ukvac] Converting RallyX to New RallyX
Going of the mame source code it looks
like you need to change 5 roms and 3 proms.
The source codes does not seem to emulate any behaviour
that is different hardware wise between the two games so
it it probelry a safe bet for a straight rom/prom swap

lee

 

[guddler]

Re: [ukvac] Converting RallyX to New RallyX
That's what i had deduced from the mame code the other night too! So,
i guess seeing as the proms are only for colour and sound (i _THINK_)
it would probably not be a waste of time to try the 5 roms first?

Obviously ultimately the three proms would want to be done since the
whole beauty of New RallyX is the funky theme tune

Cheers,
Martin.

On 6/9/05, lee taylor <lee@leetaylor.co.uk> wrote:
> Going of the mame source code it looks
> like you need to change 5 roms and 3 proms.
> The source codes does not seem to emulate any behaviour
> that is different hardware wise between the two games so
> it it probelry a safe bet for a straight rom/prom swap
>
> lee
>
>

 

[LukeWells]

[ukvac] Re: Converting RallyX to New RallyX
> Failing that, has anyone made any rom to prom conversion pcb's? Ie,
use a
> fast rom in place of a prom on an adapter?
>
> I know leopardcats has an article on using a GAL to do this but
that doesn't
> really help me since i traded my Galep4 with him and now i can't do
GALs!! -
> Doh!
>
> Ta,
> Martin.

Yes, I have done this to replace a graphics mapping prom on a sys1
cartride.

I didn't make an adapter as such, just hard wired the required pins
of the rom to a socket so that the rom was 'floating' above the
socket. It didn't work at first (as none of the roms I had were fast
enough) but then I tried a 27F512 intel flash rom from an old PC
motherboard and that worked perfectly, flash roms are generally in
the 20-70ms range whereas roms are 150-300ms range.

Luke

 

[guddler]

Re: [ukvac] Re: Converting RallyX to New RallyX
Well, i now have a TOP2005 programmer sat on the bench with me (and i
have to say, so far i'm impressed - i will do a write up and put it on
my site tomorrow if i get a moment), so i now have the GAL option
available to me.

Downside is, the price of the GAL22V10's. They looked to be quite expensive...

Having half a dozen of those kicking about on little daughterboards
for experimenting with prom replacements would be rather handy to say
the least!

Martin.

On 14/06/05, Luke Wells <ukvac@jigsawtechnologysolutions.com> wrote:
> > Failing that, has anyone made any rom to prom conversion pcb's? Ie,
> use a
> > fast rom in place of a prom on an adapter?
> >
> > I know leopardcats has an article on using a GAL to do this but
> that doesn't
> > really help me since i traded my Galep4 with him and now i can't do
> GALs!! -
> > Doh!
> >
> > Ta,
> > Martin.
>
> Yes, I have done this to replace a graphics mapping prom on a sys1
> cartride.
>
> I didn't make an adapter as such, just hard wired the required pins
> of the rom to a socket so that the rom was 'floating' above the
> socket. It didn't work at first (as none of the roms I had were fast
> enough) but then I tried a 27F512 intel flash rom from an old PC
> motherboard and that worked perfectly, flash roms are generally in
> the 20-70ms range whereas roms are 150-300ms range.
>
> Luke
>
>
>
> ________________________________
>

 

[Macro]

Re: [ukvac] Re: Converting RallyX to New RallyX
> Downside is, the price of the GAL22V10's. They looked to be quite expensive...

normally 10 or so on a bootleg SF2 ... along with lots of 16V8's as
well, so thats about 20 GAL's for a £5

 

[MikeDX]

Re: [ukvac] Re: Converting RallyX to New RallyX
plus postage + paypal fees

On 6/14/05, Mike Coates <mike@the-coates.com> wrote:
> > Downside is, the price of the GAL22V10's. They looked to be quite expensive...
>
> normally 10 or so on a bootleg SF2 ... along with lots of 16V8's as
> well, so thats about 20 GAL's for a £5
>
>
>
>
>

 

[Alpha1]

Re: [ukvac] Re: Converting RallyX to New RallyX
plus everyone now knowing that add £20

 

[guddler]

Re: [ukvac] Re: Converting RallyX to New RallyX
Okay, may as well come out with it then!!

Anyone got a bootleg SF2 they can sell me for < £20 please. Non
working is fine since i can't stand the game and would just want to
pilfur half a dozen GALs from it.

Any more than £20 (shipped) and it becomes cheaper to source the GALs )

Thanks,
Martin.

 

[MikeDX]

Re: [ukvac] Re: Converting RallyX to New RallyX
martin i'll have a rummage for my sf2 bootlegs. if i find one its
yours (or both since i never play em)

On 6/14/05, Guddler <guddler@gmail.com> wrote:
> Okay, may as well come out with it then!!
>
> Anyone got a bootleg SF2 they can sell me for < £20 please. Non
> working is fine since i can't stand the game and would just want to
> pilfur half a dozen GALs from it.
>
> Any more than £20 (shipped) and it becomes cheaper to source the GALs )
>
> Thanks,
> Martin.
>
>
>
>