Search found 754 matches

by krzysiobal
Sun Sep 20, 2020 1:11 am
Forum: NES Hardware and Flash Equipment
Topic: SP-80 Nes-On-Chip based famiclone
Replies: 5
Views: 3348

Re: SP-80 Nes-On-Chip based famiclone

I've found good photos of some similar 1818P based console: http://www.emu-land.net/forum/index.php?topic=76497.0 After checking all connections and comparing it to the SP-80 console I can say that: * 1818P matches the same pinout with the exception that VIDEO-OUT and CLK-IN pins are swapped * 1818P...
by krzysiobal
Fri Sep 18, 2020 11:34 pm
Forum: NES Hardware and Flash Equipment
Topic: Dahua Sanguo (Yancheng YC-03-09 PCB, mapper 558)
Replies: 11
Views: 633

Re: Dahua Sanguo (Yancheng YC-03-09 PCB, mapper 558)

When I tried to make Pokemon Yellow from FF VII board then it has freezed when screen is scrolled outside a home. I spotted the issue when making reproduction based on FPGA chip and protection bits were implemented not 100% correctly. After fixing it according to wiki, it started to work, maybe the...
by krzysiobal
Fri Sep 18, 2020 12:43 am
Forum: NES Hardware and Flash Equipment
Topic: 1818P based Famiclone - fix jailbars/distorted PCM?
Replies: 4
Views: 162

Re: 1818P based Famiclone - fix jailbars/distorted PCM?

FIrst time see non-blob version of NesOnChip with external RAM/VRAM. If you could provide good quality photos (*) of both sides of PCB we could determine its pinout and check what's going on with the audio/video. (*) = whole pcb on one photo, with proper brightness and no overexposure by flash light...
by krzysiobal
Wed Sep 09, 2020 3:30 pm
Forum: NES Hardware and Flash Equipment
Topic: Final Fantasy V (Yancheng cy2000-3 PCB, mapper 164)
Replies: 5
Views: 652

Re: Final Fantasy V (Yancheng cy2000-3 PCB, mapper 164)

$5000.4
Maybe the unknown pin 7 has something to do with the 1bit mode - this is the only part that I did not confirm yet.
by krzysiobal
Wed Sep 09, 2020 1:23 am
Forum: NES Hardware and Flash Equipment
Topic: Famicom 15 pin joypad - how it is wired?
Replies: 3
Views: 290

Famicom 15 pin joypad - how it is wired?

I have been making 7pin->15pin joypad adapters, that were aimed to make standard NES controlles work with famiclones that have two 15 pin joypad connectors (like iq502, bs500 model). All those consoles follow the same 15pin ports pinout http://wiki.nesdev.com/w/index.php/Controller_port_pinout Of co...
by krzysiobal
Tue Sep 08, 2020 6:08 pm
Forum: NES Hardware and Flash Equipment
Topic: New MMC3 clone or just another rebrand?
Replies: 2
Views: 518

Re: New MMC3 clone or just another rebrand?

The top (non-populated) DIP40 chips has MMC3 "88" pinout. The populated one (9051) has "9112" pinout. 7432 is indeed used for CHR/CE (with extra delay) other DIL14 aswell as some weird non-populated vias are still being investigated. https://obrazki.elektroda.pl/7561548700_1599613596_thumb.jpg https...
by krzysiobal
Tue Sep 08, 2020 2:18 am
Forum: NES Hardware and Flash Equipment
Topic: French NES with swapped PPU/CPU/Oscillator displaying only in black & white
Replies: 4
Views: 319

Re: French NES with swapped PPU/CPU/Oscillator displaying only in black & white

Can the V7021, present in french NES demodulator, properly decode colorbust from NTSC signal? It is clocked by 4.43619 MHz which is suitable for PAL.
by krzysiobal
Mon Sep 07, 2020 3:31 pm
Forum: NES Hardware and Flash Equipment
Topic: Final Fantasy V (Yancheng cy2000-3 PCB, mapper 164)
Replies: 5
Views: 652

Final Fantasy V (Yancheng cy2000-3 PCB, mapper 164)

Analysis requested by NewRisingSun. This PCB contains: * 512kB PRG-ROM * 2kB PRG-RAM * 93C46 based EEPROM2 PRG-RAM * 93C46 based EEPROM1 PRG-RAM (unpopulated) * 8kB blob CHR-RAM * mapper blob https://obrazki.elektroda.pl/8105529400_1599518248_thumb.jpg https://obrazki.elektroda.pl/2170763700_1599518...
by krzysiobal
Sat Sep 05, 2020 2:47 am
Forum: NES Hardware and Flash Equipment
Topic: Dahua Sanguo (Yancheng YC-03-09 PCB, mapper 558)
Replies: 11
Views: 633

Re: Dahua Sanguo (Yancheng YC-03-09 PCB, mapper 558)

Yup. To sum up: -Mapper 163----------------------------------------------------------- -WR $5000-- -WR $5100-- -WR $5200-- -WR $5300-- -RD $5100-- [c... SRQP] [.... ...#] [.... .#UT] [.... .A.B] [.... .#..] (when B=0) [c... SRPQ] [.... ..#.] [.... .#TU] [.... .A.B] [.... .#..] (when B=1) -Mapper 558...
by krzysiobal
Sat Sep 05, 2020 2:41 am
Forum: NES Hardware and Flash Equipment
Topic: Dahua Sanguo (Yancheng YC-03-09 PCB, mapper 558)
Replies: 11
Views: 633

Re: Dahua Sanguo (Yancheng YC-03-09 PCB, mapper 558)

NewRisingSun wrote:
Sat Sep 05, 2020 2:11 am
That is the dump I got with $5300=$07, not $04.
Yea, my dump is equivalent of read-back the ROM content as it would be desoldered.
So this is the same as of dumping the cartridge with $5300.0=1 because D0/D1 are swapped externally.
by krzysiobal
Sat Sep 05, 2020 1:27 am
Forum: NES Hardware and Flash Equipment
Topic: Dahua Sanguo (Yancheng YC-03-09 PCB, mapper 558)
Replies: 11
Views: 633

Re: Dahua Sanguo (Yancheng YC-03-09 PCB, mapper 558)

CPU A8 and CPU A9 must be swapped compared to mapper 163 as well, to make the Microwire interface appear at $5200 instead of mapper 163's $5100 No, CPU-A8/CPU-A9 is wired the same way compared to the three previously analyzed games (Diablo2, Warcraft, Harvest Moon). The blob's pins "$5200.x" are co...
by krzysiobal
Fri Sep 04, 2020 6:14 pm
Forum: NES Hardware and Flash Equipment
Topic: Dahua Sanguo (Yancheng YC-03-09 PCB, mapper 558)
Replies: 11
Views: 633

Dahua Sanguo (Yancheng YC-03-09 PCB, mapper 558)

Analysis requested by NewRisingSun. This PCB contains: * 1MB blob PRG-ROM * 8kB blob PRG-RAM (no battery back-up) * 93C46 based EEPROM PRG-RAM * 8kB blob CHR-RAM * blob mapper chip, which is exactly the same one as used in previously analyzed games (Diablo 2, Harvest Moon, Warcraft) . If treating th...
by krzysiobal
Fri Sep 04, 2020 10:22 am
Forum: NES Hardware and Flash Equipment
Topic: Pro Action Rocky cheat device for Famicom - reverse engineering
Replies: 3
Views: 410

Pro Action Rocky cheat device for Famicom - reverse engineering

I was finally able to grab this quite rare cheat device. Looks like it is somewhat similar to Game Genie, but the encoding of cheat codes is different plus it has some extendent features. Not much info about it on the web, the only valuable site is: https://www.chrismcovell.com/fcrocky.html https://...
by krzysiobal
Wed Sep 02, 2020 4:10 pm
Forum: Reproduction
Topic: Battery circuit : Save game are not holding on SRAM
Replies: 18
Views: 823

Re: Battery circuit : Save game are not holding on SRAM

Pin26 of SRAM needs to be HIGH when in batterry retention mode - pull it up to pin 28 with 100k resistor..
by krzysiobal
Sun Aug 30, 2020 4:20 am
Forum: NES Hardware and Flash Equipment
Topic: Weird famiclone with infrared controllers
Replies: 43
Views: 7528

Re: Weird famiclone with infrared controllers

If you dont even have scope or multimeter, connect diode+resistor between pin UA6581 and GND and check if it blinks if you press button on joypad. That will be sign that the receiver at least receives something