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Post AwGLd8q4cSKmZsaBCC by [email protected] |
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More posts by [email protected] |
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Post #Aw4E2n6Ew9n79aLR3Y by [email protected] |
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NES mapper programming sounds like shitposts or elaborate pranks. For example, … |
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Post #Aw4E8Xy66kOvxiHTQe by [email protected] |
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this is the kind of thing you'd expect to happen as part of some kind of tr… |
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Post #Aw4EWAQ3JYe5sMcTFw by [email protected] |
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@foone but think of all the transistors they saved on the MMC1 this way!🙃 |
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Post #Aw4EcTvRhf5C6xJYyO by [email protected] |
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also there has to be at least one cycle between writes, or it ignores them. Thi… |
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Post #Aw4EfDKnqQmbWXThSa by [email protected] |
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@foone fascinating to see someone so versed in old tech and reverse engineering… |
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Post #Aw4Eli1wdC9aSkkpW4 by [email protected] |
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@stilescrisis it's not just a latch (the NES is full of latches: that's… |
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Post #Aw4Eq7twNyYbrH7J56 by [email protected] |
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@foone I love the 6502, none of this surprises me anymore |
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Post #Aw4EwzdLWUPAFAd4MK by [email protected] |
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also some PCBs didn't bother connecting pin 14 to the MMC1. So this behavio… |
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Post #Aw4F3fXecdqLxP9Mxs by [email protected] |
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@stilescrisis I'm from the x86, where we at least pretended there was a goo… |
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Post #Aw4FSTB9ixhQr0S7QO by [email protected] |
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one of the registers you program with this interface is used to select the PRG-… |
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Post #Aw4GOKQmPIWuWCLkHI by [email protected] |
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it doesn't affect the MMC1, but the way some mappers are implemented on the… |
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Post #Aw4GVA8h4Nzoct9HxA by [email protected] |
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this is caused by a bus conflict with the mapper and the CPU confusing the mapp… |
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Post #Aw4GaJSZqKReyvuAjY by [email protected] |
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so even though the mapper is listening to writes in the entire top half of the … |
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Post #Aw4HYjGN2KUMNr0Jma by [email protected] |
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every corner of the NES is like this.you look up any section of that machine an… |
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Post #Aw4I1v9XuQV3epjQR6 by [email protected] |
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@foone why is the first write required to write the old value? Was this a sort … |
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Post #Aw4I1vGHVNt5zisnw0 by [email protected] |
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@piggo it's because when you try to write the value, the ROM itself also tr… |
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Post #Aw4IDx0op2mMtnNzP6 by [email protected] |
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@foone writing a NES emulator always sounded like it was fairly easy to get Sup… |
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Post #Aw4IDx7CRJspDaN5Lk by [email protected] |
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@gloriouscow seven years is maybe a bit optimistic, but yeah. |
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Post #Aw4IPDLsPcMYlEbf8K by [email protected] |
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@foone oh that's an aspect I'd never even considered for emulation. lik… |
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Post #Aw4J4M0p7MHXUfNMzA by [email protected] |
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@foone I guess that's why so many emulator projects end up having a big dat… |
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Post #Aw4J4M6qkx6PnMCBNY by [email protected] |
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@gsuberland yep |
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Post #Aw4Js0K428ZAhg3CJE by [email protected] |
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@foone gaming consoles converging towards computers and tablets makes programmi… |
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Post #Aw4PLgvTDJyH0JWRTU by [email protected] |
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@foone This is me cancelling plans to ever write an NES emulator |
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Post #Aw4ngfEP6iSEjHuaoa by [email protected] |
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@foone another fun thing about the MMC1: it's on the programmer to write 5 … |
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Post #AwGLbtrUomihpzejDs by [email protected] |
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@foone I had to change the header on a game for some friends because it used a … |
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Post #AwGLbtzILmxUEBIxNY by [email protected] |
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@foone What specifically causes Heisei Tensai Bakabon to break on a MiSTer or A… |
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Post #AwGLbu5fy43wXyI3KC by [email protected] |
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@elfi @foone If you care to know, the NESdev Wiki has details on every known ma… |
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Post #AwGLbuCPZ1RysrRQp6 by [email protected] |
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@NekoEd @foone yeah, it's more specifically debugging where things go wrong… |
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Post #AwGLbuIRCcGrBYGFDU by [email protected] |
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@elfi @foone Ah. You'd have to have the docs and single-step through to do … |
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Post #AwGLch4Hs14CRr18Sm by [email protected] |
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@gsuberland I seem to recall (and I think it was a @foone thread back on the bi… |
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Post #AwGLchDrIQisvXUmNk by [email protected] |
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@luna @gsuberland @foone You recall correct! |
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Post #AwGLd8q4cSKmZsaBCC by [email protected] |
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@gsuberland @foone Except we did; NES ROMs use the iNES header, later extended … |
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Post #AwLCZDRzbUyzvPAiOW by [email protected] |
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@pulkomandy @foone good point! |
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Post #AwLCZDa97BVMKgzE6S by [email protected] |
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@Ronflaix @pulkomandy @foone This is how you program the audio clock (you know,… |
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Post #AwLCZDhafVSYhmTAhs by [email protected] |
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@lina @Ronflaix @pulkomandy @foone this makes so much sense to me |
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Post #AwLbr7aed2ONoerG1g by [email protected] |
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@[email protected] is the CIC chip digital though? if not, it can't be ca… |
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Post #AwLbr7hODzmQ9Y0dWa by [email protected] |
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@Haijo7 it is, yeah. it's a 4-bit Sharp microcontroller |
