Search found 14 matches

by dext3r
Fri Jun 15, 2012 11:54 am
Forum: SNESdev
Topic: simple SNES flashrom project
Replies: 0
Views: 2351

simple SNES flashrom project

hey all, just wanted to share this project i was working on: http://electrifiedfoolingmachine.co/?page_id=633 thanks to people who gave me help on this forum! :D i just felt making this device was alot easier than mucking around with a Willem programmer and adapters and all that jazz, especially whe...
by dext3r
Mon Mar 26, 2012 1:36 pm
Forum: SNESdev
Topic: ORDER am29f032b-TSOP -> SNES-ROM36-DIP..
Replies: 96
Views: 32128

Here's the end result of discussion threads like this: People are selling fake Earthbound carts with boards like this now, claiming they are authentic. Anyone here want to take credit for this one? I beg to differ...the end result of threads like this is that people are able to run whatever code th...
by dext3r
Mon Feb 27, 2012 7:39 pm
Forum: SNESdev
Topic: fullsnes - new SNES hardware specs
Replies: 65
Views: 58719

nocash wrote: Hmmm, Nintendo didn't release any specs an max cartridge power consumption?
i assume the creators of the powerpak or sd2snes would know something. (or how else did they manage to stay within the snes power budget :?: )
by dext3r
Mon Feb 27, 2012 2:55 pm
Forum: SNESdev
Topic: fullsnes - new SNES hardware specs
Replies: 65
Views: 58719

Simple question that could be included in the doc

Max current draw of a cart in the cartridge slot?


Some quick thoughts: One ROM uses 40mA while operating (checked the datasheet for the ROM) and some carts have 2 ROMs so thats at least 80mA.
by dext3r
Sun Jul 10, 2011 6:48 pm
Forum: SNESdev
Topic: Xka Shack
Replies: 3
Views: 2356

worked for me on geiger snes9x ep10r2.

pretty interesting...is there any source for this?
by dext3r
Wed Jun 29, 2011 2:48 pm
Forum: SNESdev
Topic: emulator crashing when sep/rep processor status bits
Replies: 6
Views: 3071

I couldn't even assemble the code if I added those 4 lines. The assembler chokes at an LDX instruction in SetCursorPos that is trying to load an immediate larger than 8 bits after you've set all the registers to 8-bit with SEP #$30. Yeah not sure how i was getting the code to assemble...i restarted...
by dext3r
Wed Jun 29, 2011 9:11 am
Forum: SNESdev
Topic: emulator crashing when sep/rep processor status bits
Replies: 6
Views: 3071

I don't know why Snes9x crashes. What I can say is that you should ditch Snes9x right away and use BSNES instead, as it's a lot more accurate and also has a debugger. What were the register size bits set to before the instructions you inserted? You should make sure they're set to the same as they w...
by dext3r
Tue Jun 28, 2011 2:11 pm
Forum: SNESdev
Topic: emulator crashing when sep/rep processor status bits
Replies: 6
Views: 3071

emulator crashing when sep/rep processor status bits

hello, im using Neviksti's snes-starterkit (WLA-DX assembler) and messing with the example Hello.asm... let me show some example code: ; some other init code/misc stuff goes here.... ; do some math with the decimal flag clear PrintString "\nDecimal flag clear: 9+8 = " lda #9 clc adc #8 sta...
by dext3r
Tue May 24, 2011 5:12 pm
Forum: SNESdev
Topic: snes cart hacking: replacing mask ROMs
Replies: 6
Views: 6426

just of interesting note, i obtained an older revision of the cart PCB and it, in fact, has 1 mask ROM. (+ MAD-1 and SRAM) so it does look like at some point down the road it was cheaper to do the 8/16mbit combo and just decode it differently. now i have another board to hit up with the multimeter :P
by dext3r
Fri May 13, 2011 9:06 pm
Forum: SNESdev
Topic: snes cart hacking: replacing mask ROMs
Replies: 6
Views: 6426

much thanks for the replies guys

sorry if this stuff has been gone over a thousand times -- its probably really extremely trite stuff to vets like you and tepples :)

i think i am closer to getting it -- i need to hit up the cart with my multimeter
by dext3r
Fri May 13, 2011 2:45 pm
Forum: SNESdev
Topic: snes cart hacking: replacing mask ROMs
Replies: 6
Views: 6426

so im looking at this...

what happens when A15 is low? which ROM is selected?
by dext3r
Fri May 13, 2011 8:27 am
Forum: SNESdev
Topic: 16-bit stereo 32 kHz streaming success
Replies: 38
Views: 24565

wow this is awesome! sounded ok for me on snes9x with directsound.

just awesome!
by dext3r
Thu May 12, 2011 12:15 pm
Forum: SNESdev
Topic: snes cart hacking: replacing mask ROMs
Replies: 6
Views: 6426

LoROM means A15 is ignored, and now you're down to 32 Mbit of address space (without doing a Lo-Hi combo like Tales of Phantasia). Perhaps during the Super NES's commercial era, a 16 Mbit mask ROM and a 4 Mbit or 8 Mbit mask ROM combined were cheaper than a 32 Mbit mask ROM. Banks 00-3F give you 64...
by dext3r
Thu May 12, 2011 8:39 am
Forum: SNESdev
Topic: snes cart hacking: replacing mask ROMs
Replies: 6
Views: 6426

snes cart hacking: replacing mask ROMs

hello all, I need some help/explanation of how the NBA JAM TE cart is designed. It's a 24 Mbit LoROM cart with 2 ROMs, SaveRAM and MAD-1 decoder. http://www.snescentral.com/pcb.php?id=0111&num=0&side=front Here's where I'm getting confused: 36-pin ROM has 23 Address lines...(A0-A22) which gi...