Search found 2835 matches

by MottZilla
Wed Feb 07, 2018 4:04 pm
Forum: Newbie Help Center
Topic: Mapper Suggestions
Replies: 14
Views: 4805

Re: Mapper Suggestions

The introduction cut scene to my game is graphic intensive. It consists of a 13 pages each with their own text and images (which can't all fit in the same bank). Currently I have all but 2 of them programmed as separate ASM files which I eventually need to merge together into something much more me...
by MottZilla
Tue Feb 06, 2018 11:51 am
Forum: SNESdev
Topic: SNES Newbie
Replies: 10
Views: 6505

Re: SNES Newbie

I'm not sure but I have a random suggestion. After you transfer the data to the SPC are you immediately issuing a command or do you let some time pass before then? Maybe you are too quickly trying to issue a command that the SPC program isn't ready and doesn't see your command and never gives the re...
by MottZilla
Sat Feb 03, 2018 1:05 pm
Forum: Newbie Help Center
Topic: Using unused nametable RAM as a general RAM deposit?
Replies: 21
Views: 6023

Re: Using unused nametable RAM as a general RAM deposit?

Some games read the Nametables contents for collision/game logic, so you could certainly use it for whatever you want. Is it really a good idea? That will depend on your specific situation. In general it's hard to see a reason to store random information in NameTables. If you had a non-scrolling gam...
by MottZilla
Wed Jan 31, 2018 11:48 am
Forum: NES Hardware and Flash Equipment
Topic: RetroFreak ROM encryption?
Replies: 11
Views: 5130

Re: RetroFreak ROM encryption?

I didn't look through everything but a quick looks doesn't turn up anything obviously about their ROM protection. Maybe if you dig deeper into it. But I don't see why they would create such a protection and then include the source code to how it works.
by MottZilla
Wed Jan 31, 2018 11:34 am
Forum: NESdev
Topic: NES output resolution
Replies: 26
Views: 7533

Re: NES output resolution

I've never, ever, seen any TV display anything remotely similar to what emulators pass off as "scanlines", be it 100%, 50% or even 25%. I could never understand why those options existed. One reason it doesn't look similar is because it's not 50/50 image and black line. Sumez's picture shows that i...
by MottZilla
Tue Jan 30, 2018 5:03 pm
Forum: NES Hardware and Flash Equipment
Topic: RetroFreak ROM encryption?
Replies: 11
Views: 5130

Re: RetroFreak ROM encryption?

Ofcourse there is a way to undo it. If there wasn't then the RF itself couldn't play those games. The encryption or scrambling could be really simple. If someone extracts the firmware/software of the RF they could figure out what's going on that way. One way to dump prototypes if they are using sock...
by MottZilla
Mon Jan 29, 2018 10:07 pm
Forum: NES Hardware and Flash Equipment
Topic: RetroFreak ROM encryption?
Replies: 11
Views: 5130

Re: RetroFreak ROM encryption?

If you made enough dumps to compare it could help someone figure out what is going on perhaps. A quick Google search suggests to me that each console has some sort of ID number so that you can't share dumped games with other RF consoles or use them on other devices. So that number is probably used a...
by MottZilla
Mon Jan 29, 2018 3:02 pm
Forum: NES Hardware and Flash Equipment
Topic: RetroFreak ROM encryption?
Replies: 11
Views: 5130

Re: RetroFreak ROM encryption?

Did you check to see if they were compressed? Maybe it ZIPs the ROMs to save on file space.
by MottZilla
Sat Jan 27, 2018 11:02 pm
Forum: SNESdev
Topic: Introducing the VeriSNES (FPGA-based SNES)
Replies: 307
Views: 178452

Re: Introducing the VeriSNES (FPGA-based SNES)

@jwdonal Are you alive? @idc I (and thousands like me) want S-Video and RGB like the original for authentic experience on a CRT,,, which the Super Nt doesn't deliver. I don't care for HDMI, I have emulators with 99.99% compatibility that look and play just as good. You kind of missed out because An...
by MottZilla
Wed Jan 24, 2018 10:12 pm
Forum: SNESdev
Topic: Adding address line to cx4 board (32mb romhack)
Replies: 19
Views: 11688

Re: Emulating A21 on 1DC0N or 2DC0N cx4 pcb (32mb romhack)

I missed that. I bet you are correct though that the hack just expects the memory to be in those banks for the CPU and PPU to access. You just have to achieve that in hardware.
by MottZilla
Wed Jan 24, 2018 6:28 pm
Forum: SNESdev
Topic: Adding address line to cx4 board (32mb romhack)
Replies: 19
Views: 11688

Re: Emulating A21 on 1DC0N or 2DC0N cx4 pcb (32mb romhack)

The hack may not be compatible with the original Cx4 hardware. The implementation on the SD2SNES and in emulation might be able to support larger ROM sizes while the original can't. If only the S-CPU needs access to the additional ROM and not the Cx4 then you could make a circuit that would work if ...
by MottZilla
Wed Jan 24, 2018 5:21 pm
Forum: SNESdev
Topic: Help fix an SNES
Replies: 9
Views: 5085

Re: Help fix an SNES

Do you mean original games? Yes, I meant original cartridges. Sorry if I wasn't clear enough. :oops: buy a Flash Cartridge Yes, a flashcard would be the best solution ever. :beer: I believe all have proper designs that won't harm your system. I'm using this page as reference. I think it was cited b...
by MottZilla
Mon Jan 22, 2018 11:46 am
Forum: SNESdev
Topic: Help fix an SNES
Replies: 9
Views: 5085

Re: Help fix an SNES

Do you mean original games? Or original what? If you want to play games that you cannot obtain then buy a Flash Cartridge like the SD2SNES, PowerPAK, or EverDrive. I believe all have proper designs that won't harm your system. If those are too expensive to obtain then making your own socketed EPROM ...
by MottZilla
Mon Jan 22, 2018 12:13 am
Forum: SNESdev
Topic: Help fix an SNES
Replies: 9
Views: 5085

Re: Help fix an SNES

The bad cart could have been part of it. However SNES consoles are known to have failures perhaps more so than other consoles of the era. My original SNES developed some sort of internal failure in one of the two PPU chips causing a line of garbage in sprite cells. The only "fix" was to swap the PCB...
by MottZilla
Wed Nov 29, 2017 11:54 am
Forum: GBDev
Topic: Fixing ROMs for EMS 64 GB Smart Card USB
Replies: 334
Views: 167148

Re: Fixing ROMs for EMS 64 GB Smart Card USB

If you can get information on the cartridge's registers it would help to patch those games. But I'm only familiar with the SmartCard that this thread is all about. I imagine the problem is similar in nature where the game is writing an area that on the original cartridge would do nothing but on the ...