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Black Belt Jones
Account closed
Registered: Apr 2002
Posts: 57 |
Action Replay question.
G'day homoerectuses!
A mate just gave me 2 Action Replay cartridges, a 4.1 and a Pro 4.2, I've gotta choose one and give the other one back, anyway here's the question,
looking inside both of them, the PCB's are identical, but the Pro 4.2 has a second 28 pin IC soldered in. That same socket inside the 4.1 has nothing in it. Looking up the IC specs on the net, it comes up as 64kb SRAM. I'm guessing that's the difference between the Pro and standard AR's? |
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Graham
Account closed
Registered: Dec 2002
Posts: 990 |
action replay has 8 kb ram, only the retro replay comes with 32 kb. |
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Black Belt Jones
Account closed
Registered: Apr 2002
Posts: 57 |
so the AR that i have only addresses 8Kb of the 64Kb then? dang shame :-) |
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Graham
Account closed
Registered: Dec 2002
Posts: 990 |
no, you mix up kbit with kbyte. 64 kbit = 8 kbyte. |
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Black Belt Jones
Account closed
Registered: Apr 2002
Posts: 57 |
oh yes, i forgot to check my ignorance meter before posting... it's in the red zone right now :-) |
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xforp
Account closed
Registered: Jan 2003
Posts: 4 |
Quote: Sorry, which programs are actually capable of using the AR extra RAM? Doesn't the AR6 also have extra RAM (32 KB IIRC)?
ar4 prof. and all above got 8kb ram.
some cruncher/packer use this extra mem. |
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Black Belt Jones
Account closed
Registered: Apr 2002
Posts: 57 |
Cheers guys, I'm thinkin about burning the Cyberpunx Replay rom and smacking that into the cart, has anyone done it, is it worth doing, or should i just stick with the original? |
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Graham
Account closed
Registered: Dec 2002
Posts: 990 |
that will not work. cyberpunx replay is made for retro replay hardware which has more features than the old action replay hardware. also, the cyberpunx rom uses the reu compability mode of the retro replay which means that a different memory layout in i/o space is used which is incompatible to the old action replay hardware. |
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WVL
Registered: Mar 2002
Posts: 886 |
you can not burn the 64KB roms, but there are also 32KB cyberpunx roms available..
BUT i wouldn't burn those roms to your AR. They're too unstable and lack too many options imo.
most annoying is that a certain byte (around $8000-$9000) gets destroyed after resetting, leaving you wondering why your code doesn't work anymore..
this hast cost me quite some time when the RR was released first. i cannot live with this error myself, so I have my own version of the AR6 rom flashed to my rr..
don't burn the 32K rom to your AR, just stick with the original AR rom, or to one of the special released roms with different function-key settings (i wouldn't use them, but maybe fcIII function-keys are good for you) |
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Black Belt Jones
Account closed
Registered: Apr 2002
Posts: 57 |
According to the docs on the cyberpunx site:
"On real Action Replay hardware the 32kb roms can be used whenever the eprom is on a socket and can be replaced. Simply burn the .BIN files with a start address added (if needed by the eprom burner only ofcourse) to a 27c256 eprom and plug it in."
Apparently on AR version 4.x to 5.x the eprom is socketed so replacement is easy.
WVL: points taken, sounds like i'd better just stick with the original...
Thanks for the replies fellas, mucho appreciation. |
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Count Zero
Registered: Jan 2003
Posts: 1825 |
WVL is right here ... IF you burn the 32kb version, make sure to keep your old eprom intact. Also the 32kb versions will very soonish be discontinued ... too much hazzle fuzzing in for 32kb release ... any v5 does best for a plain 32 kb AR.
l8r
Count Zero/CyberpunX/SCS*TRC |
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