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titan_ae
Account closed
Registered: Jun 2002
Posts: 46 |
C64 Reloaded ? (in Hardware)
Someone else noticed that 1st April entry at c64.sk about a new C64 in actual Hardware made by individual computers ?
Thought about an April joke, but then i saw this :
http://wiki.icomp.de/wiki/C64_reloaded
Anyone up for this ? :) |
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-trb-
Registered: May 2008
Posts: 9 |
Quoting Groepazthe current stock is no more, *afaik* - but it was selling so good, i dont see why jens wouldnt do another production run. Oh, nobody here mentioned yet that there actually will be two new versions of C64 Reloaded available. Both will be completely new designs. One of them will be based on Turbo Chameleon 64 but will offer more C64-like interfaces. In the far, far future also complete C64 computers could be sold under the Commodore label as Jens stated in a German podcast. |
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Skate
Registered: Jul 2003
Posts: 494 |
Is there any way to buy a C64 Reloaded even if being too lazy to follow manufacturing batches? I check the shop time to time and always see that "Out of stock" message. I'm sure i'm gonna miss it when it will be available again. Couldn't you sell some at upcoming X? No ready units at all? :) |
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AlexC
Registered: Jan 2008
Posts: 298 |
Reading through some compatibility issues between Drean, NTSC etc I've found this thread and I wonder if someone actually tested (besides Jens of course) compatibility level of this board considering minor fixes introduced like the VSP fix. The history teaches us that even very minor, carefully planned changes can have some unexpected side effects. Actually I am interested is there a way to detect c64 reloaded board from the software. The note about Mssiah makes me wonder if this is possible. Can anyone also tell more about Mssiah protection that makes this cartridge fail to start without reset button on those boards? |
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chatGPZ
Registered: Dec 2001
Posts: 11359 |
the mssiah checks if the reset line goes high (inactive) until a certain time after powerup. now, the reset signal in the c64r is generated by a small microcontroller, and it will infact first be inactive after poweron, and then go down to reset the c64 - which is what makes mssiah protection fail.
the VSP fix just fixes some timing details between the VIC and the RAM - which is completely transparent to software too. |
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TheRyk
Registered: Mar 2009
Posts: 2219 |
wow this (reset line) in fact is new to me and might also explain some other spooky behaviour of C64R |
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AlexC
Registered: Jan 2008
Posts: 298 |
Quote: the mssiah checks if the reset line goes high (inactive) until a certain time after powerup. now, the reset signal in the c64r is generated by a small microcontroller, and it will infact first be inactive after poweron, and then go down to reset the c64 - which is what makes mssiah protection fail.
the VSP fix just fixes some timing details between the VIC and the RAM - which is completely transparent to software too.
Thanks for the reply Groepaz. For a sec I've thought that Mssiah developers found a new interesting cartridge protection scheme based on software tricks. In such case however it is clearly hardware implementation.
Coming back to my main question: is there a software way to detect c64 reloaded board? |
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chatGPZ
Registered: Dec 2001
Posts: 11359 |
i very much doubt it.... but, please come up with one :) |
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AlexC
Registered: Jan 2008
Posts: 298 |
Quote: i very much doubt it.... but, please come up with one :)
First of all I'd need to have one which I don't.
So this is just a theory or rather start of an idea that could show further directions to someone who actually have it: how about using:
lda #0
lax #$ff
considering that it is also voltage dependent. Could it be that c64r is more stable in that area due to stable voltage supply to cpu? |
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JackAsser
Registered: Jun 2002
Posts: 2014 |
Quote: i very much doubt it.... but, please come up with one :)
I'm sure LFT will exploit some VSP-crash bound to happen on any real C64, but not on the Reloaded. ;) |
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TheRyk
Registered: Mar 2009
Posts: 2219 |
JackAsser: then lft is the one to code a Reloaded detector :D
pseudo-code:
if lft's code works branch "C64R not found" |
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