So, if you've read my previous thread(s) on extending the number of tunes in Out Run you'll be aware that me and Porchy have now successfully achieved this.
Porchy has very kindly designed a PCB which will slot directly into the Z80 code eprom socket on the Out Run board set. The PCB will incorporate a PLCC32 socket and map the pins of a 28-pin 27512 eprom to the equivalent pins of a PLCC32 memory (39SF010A or equivalent).
The PCB will look something like this :-
It will be available as a either a bare PCB or as a full kit containing the assembled adapter module and the pre-programmed GAL.
If you choose to buy the bare PCB you'll need the following :-
1 x PLCC32 socket
1 x 1Mbit PLCC32 flash memory
1 x GAL16V8 for new Z80 address decoding
2 x 14-way pin headers
1 flying wire to link the A16 point on the PCB to pin 18 of the GAL
You'll also need some way to program the PLCC32 memory (a DIP32 to PLCC32 adapter can be bought on eBay for a couple of quid).
If you choose to buy the fully assembled module then you'll just need to replace the Z80 code eprom and the custom address decoder device @ IC108 then solder a flying wire from pin 18 of the GAL to the A16 point of the adapter PCB.
Prices haven't been set in stone yet but are expected to be around the £5 mark for the bare PCB and around the £20 mark for the fully assembled module.
The legality of distributing the new tunes and the fixed PCM sample rom obviously raises issues. I'm open to suggestions as to how you guys think the best way to get these new tunes out into the open is, without raising too much awareness from Sega's men in black.
Is anybody interested in adding two new tunes to Out Run? If so then please register your interest in this thread.
EDIT : I forget to mention, you'll also need 4 x 27512 roms for the patched 68000 code. These roms are NOT included in the price of the kit as I figured that most people will have at least 4 spare 27512 roms laying around somewhere. The patches done to the 68000 code and the Z80 will be freely available. The 68000 patches are in the same format as the current OR Enhanced patches and you can choose whether you want the extra music tracks patched on top of all the current OR Enhanced patches or whether you just want the new music tracks but none of the other OR Enhanced patches. The Z80 code patches will come as a bsdiff patch file.
Interest declared so far :-
Full kit
--------
Alpha1
cosine
niknak
Sarj, do you want the bare PCB or the full kit?
cmonkey2015-03-29 12:50:07
Porchy has very kindly designed a PCB which will slot directly into the Z80 code eprom socket on the Out Run board set. The PCB will incorporate a PLCC32 socket and map the pins of a 28-pin 27512 eprom to the equivalent pins of a PLCC32 memory (39SF010A or equivalent).
The PCB will look something like this :-
It will be available as a either a bare PCB or as a full kit containing the assembled adapter module and the pre-programmed GAL.
If you choose to buy the bare PCB you'll need the following :-
1 x PLCC32 socket
1 x 1Mbit PLCC32 flash memory
1 x GAL16V8 for new Z80 address decoding
2 x 14-way pin headers
1 flying wire to link the A16 point on the PCB to pin 18 of the GAL
You'll also need some way to program the PLCC32 memory (a DIP32 to PLCC32 adapter can be bought on eBay for a couple of quid).
If you choose to buy the fully assembled module then you'll just need to replace the Z80 code eprom and the custom address decoder device @ IC108 then solder a flying wire from pin 18 of the GAL to the A16 point of the adapter PCB.
Prices haven't been set in stone yet but are expected to be around the £5 mark for the bare PCB and around the £20 mark for the fully assembled module.
The legality of distributing the new tunes and the fixed PCM sample rom obviously raises issues. I'm open to suggestions as to how you guys think the best way to get these new tunes out into the open is, without raising too much awareness from Sega's men in black.
Is anybody interested in adding two new tunes to Out Run? If so then please register your interest in this thread.
EDIT : I forget to mention, you'll also need 4 x 27512 roms for the patched 68000 code. These roms are NOT included in the price of the kit as I figured that most people will have at least 4 spare 27512 roms laying around somewhere. The patches done to the 68000 code and the Z80 will be freely available. The 68000 patches are in the same format as the current OR Enhanced patches and you can choose whether you want the extra music tracks patched on top of all the current OR Enhanced patches or whether you just want the new music tracks but none of the other OR Enhanced patches. The Z80 code patches will come as a bsdiff patch file.
Interest declared so far :-
Full kit
--------
Alpha1
cosine
niknak
Sarj, do you want the bare PCB or the full kit?
cmonkey2015-03-29 12:50:07
