Search found 217 matches

by FrankWDoom
Sat Nov 30, 2019 10:20 pm
Forum: Newbie Help Center
Topic: MMC1 SNROM help
Replies: 7
Views: 2762

Re: MMC1 SNROM help

if the instructions don't call out a pin it generally goes to whatever hole its over.

another tip is don't run wires over the top of the chip, there's basically no clearance between the chip top and the shell.
by FrankWDoom
Thu Oct 24, 2019 12:42 pm
Forum: NESemdev
Topic: MMC3 IRQ Specifics
Replies: 15
Views: 7468

Re: MMC3 IRQ Specifics

Are you taking mmc3 variant behavior into account? Search the forum for that incredible crash test dummies thread from not too long ago. I believe the mickey game was highlighted in there too.
by FrankWDoom
Mon Oct 21, 2019 4:37 pm
Forum: NES Hardware and Flash Equipment
Topic: how to remove dip chip perfectly?
Replies: 12
Views: 4895

Re: how to remove dip chip perfectly?

Hakko guns are the best. If you're using it heavily it's worth the investment.

The pencil style desoldering irons work but burn up tips like crazy. Also clumsy to use.

Nothing else is worth mentioning.
by FrankWDoom
Mon Sep 09, 2019 1:46 pm
Forum: NES Hardware and Flash Equipment
Topic: Nintendo World Championship 1990 - reverse engineering
Replies: 6
Views: 5524

Re: Nintendo World Championship 1990 - reverse engineering

Kevtris' writeup mentions the cic reset line is connected to something else on the board, what's going on with that?
by FrankWDoom
Wed Jul 17, 2019 10:26 pm
Forum: Newbie Help Center
Topic: Need help dumping Cheetahmen: The Creation
Replies: 83
Views: 18542

Re: Need help dumping Cheetahmen: The Creation

i'm sure i'm not the first one to dump it, but modern ip doesn't generally get spread around too much. in this case it's a cash grab release that afaik and based on the 2 minutes i spent playing it is absolutely terrible. it's a novelty more than anything. did you just buy this with the intention of...
by FrankWDoom
Wed Jul 17, 2019 10:01 am
Forum: Newbie Help Center
Topic: Need help dumping Cheetahmen: The Creation
Replies: 83
Views: 18542

Re: Need help dumping Cheetahmen: The Creation

Retrousb had a batch of copynes for sale earlier this year. So.theyre not discontinued, just not a priority apparently. But with high demand in the secondary market maybe it'll spur more production.
by FrankWDoom
Wed Jul 17, 2019 12:08 am
Forum: Newbie Help Center
Topic: Need help dumping Cheetahmen: The Creation
Replies: 83
Views: 18542

Re: Need help dumping Cheetahmen: The Creation

if it makes you feel better, i might not have thought to dump it without this thread. i picked mine up secondhand and i think this is the first time i've ever booted it up.

it'd still be good to figure out how to dump yours to verify. maybe the script needs to be fixed or something.
by FrankWDoom
Tue Jul 16, 2019 10:23 pm
Forum: Newbie Help Center
Topic: Need help dumping Cheetahmen: The Creation
Replies: 83
Views: 18542

Re: Need help dumping Cheetahmen: The Creation

i have this cart and dumped it with my copynes. i used the mapper 11 script for color dreams/acgi. here's the famirom info: Cheetahmen The Creation.nes iNES ver.: 1.0 platform: NES mapper: 11 mirroring: Vertical prg size: 64KB (512kb) chr size: 32KB (256kb) prg ram: not specified battery: no trained...
by FrankWDoom
Fri Jun 28, 2019 10:14 am
Forum: Reproduction
Topic: Adding sram to laser invasion
Replies: 46
Views: 32717

Re: Adding sram to laser invasion

Sim city expects 2 ram slots of 16K each, not a single 32K. Each slot is capable of 32K on its own so I'd suspect you have your single chip wired up wrong.
by FrankWDoom
Wed Jun 12, 2019 12:06 am
Forum: NES Hardware and Flash Equipment
Topic: dumping unrom 512 board with copynes
Replies: 2
Views: 4474

Re: dumping unrom 512 board with copynes

thanks. i watched some writes with the fceu debugger and it does seem to change chr ram banks. notably the opening cutscene right after start is garbled if set to mapper 2. i didn't watch further but since the 32k pads are connected i'll leave the rom header as 32k. so this is what my assembled rom ...
by FrankWDoom
Mon Jun 10, 2019 11:50 pm
Forum: NES Hardware and Flash Equipment
Topic: dumping unrom 512 board with copynes
Replies: 2
Views: 4474

dumping unrom 512 board with copynes

i have an (official) Assimilate cart. it has a unrom 512 board. i have a copynes system. i'm trying to build a nes rom from it. this is not the full version rom available on the official site- that is a mapper 1 rom. based on the pics, i gather the dumped rom should be specced as mapper 30 (?) 2 mb ...
by FrankWDoom
Sat May 18, 2019 11:14 am
Forum: NES Hardware and Flash Equipment
Topic: circuitry explanation for a cart hardware fix
Replies: 8
Views: 9933

Re: circuitry explanation for a cart hardware fix

Don't put a capacitor between /CE and GND. From my experience it is very problematic, for example - for -70ns SRAMs it worked, for -200ns it produced hanging of WRAM-based games randomly. Also it depended on the consoles, on some model it worked and on some doesn't. Better use the diode-resistor-ca...
by FrankWDoom
Sat May 11, 2019 1:15 pm
Forum: NES Hardware and Flash Equipment
Topic: circuitry explanation for a cart hardware fix
Replies: 8
Views: 9933

circuitry explanation for a cart hardware fix

from this topic where a glitch is discussed, and a hardware mod is given as a solution put a 1nF capacitor on the leg of pin 20 (CE) (note: actually /CE) of the PRG ram chip and connect the other to ground what purpose does this serve? is there a name for this piece of the circuit? how does the valu...
by FrankWDoom
Thu Mar 21, 2019 6:31 pm
Forum: NES Hardware and Flash Equipment
Topic: (SOLVED) .BIN to .NES
Replies: 7
Views: 9923

Re: .BIN to .NES (Help)

It gave me one 384 KB .bin file i dumped both the regular and prototype of the game. The regular one runs but the Characters are scrambled, the Prototype just loads a gray screen. Thanks for the program tho FrankWDoom, huge help!!! that photo you linked has 2x 128K chips. so one 384K bin looks like...
by FrankWDoom
Thu Mar 21, 2019 10:33 am
Forum: NES Hardware and Flash Equipment
Topic: (SOLVED) .BIN to .NES
Replies: 7
Views: 9923

Re: .BIN to .NES (Help)

famirom has an editor screen to do this. download here: http://www.angelfire.com/retro/kingmercury/ the editor is available from the menu button (...) in the top right. add your prg and chr bins on the right, and set the mapper number to 1 for mmc1. the default values for everything else should be f...