Search found 66 matches

by naruko
Wed May 10, 2023 10:13 pm
Forum: NES Hardware and Flash Equipment
Topic: Maybe something new about TC0350 + X1-005
Replies: 5
Views: 718

Re: Maybe something new about TC0350 + X1-005

krzysiobal: Thanks for replicating it so quickly. I checked the internal memory, and I think its capacity is 64 bytes. Please check 'tc0350_internalmemory_data.txt'. When address $c003 = data 0b11, TC0350 returns internal memory data without address register $c002 at address $c000-$dfff by my check....
by naruko
Tue May 09, 2023 11:50 pm
Forum: NES Hardware and Flash Equipment
Topic: Maybe something new about TC0350 + X1-005
Replies: 5
Views: 718

Maybe something new about TC0350 + X1-005

Hello, long time no see. I'm prototyping a new FC dumper/programmer. I noticed something about the Taito TC0350 and X1-005 specifications on the Nesdev wiki. TC0350 CPU register address $c000, data bit 0. It switches databus to unstable (=1) or ROM (=0) in CPU address $c000-$dfff read cycle. The def...
by naruko
Thu May 17, 2018 7:01 am
Forum: NESemdev
Topic: Pasofami emulator author Nobuaki ANDOU has passed away
Replies: 19
Views: 14389

Re: Pasofami emulator author Nobuaki ANDOU has passed away

Personal Computer -> パーソナルコンピュータ → パソコン -> パソ -> Paso
Famicom -> ファミコン -> ファミ -> Fami
by naruko
Mon Feb 12, 2018 5:08 am
Forum: FCdev
Topic: DRGN-D (VS.System)
Replies: 8
Views: 21968

Re: DRGN-D (VS.System)

所持者と連絡できる方法はすぐに見つかりますし、現地にいって話をしないとダメでしょうね.
外国からであっても日本に来るなら手伝うと書いたけど返事がなかったし.
by naruko
Fri Dec 22, 2017 5:33 am
Forum: NES Hardware and Flash Equipment
Topic: Oryginal Kazzo (Anago) UNROM cart problem
Replies: 11
Views: 7605

Re: Oryginal Kazzo (Anago) UNROM cart problem

In currently, SST39SF040 is easy to find DIP32, 5V, 512Kx8 flash memory. The command addresses range of SST39SF040 is too wide for CPU area ROM on the UNROM and MMC1. Ten years ago, AM29F040B was easy to find DIP32, 5V, 512kx8 flash memory... I have checked AMIC A29040B and Macronix MX29F040C as alt...
by naruko
Sun Oct 08, 2017 9:40 am
Forum: NES Hardware and Flash Equipment
Topic: Pirate Gemlins 2 RE
Replies: 33
Views: 15495

Re: Pirate Gemlins 2 RE

I have researched pirate gremilins 2 cartridge last year.
IC placement is different on the PCB. It uses same ICs.
[attachment=0]20160716150640.jpg[/attachment]
by naruko
Wed Aug 16, 2017 7:12 am
Forum: NES Hardware and Flash Equipment
Topic: Help to dump rare 82 in 1 Chinese cartridge.
Replies: 50
Views: 20827

Re: Help to dump rare 82 in 1 Chinese cartridge.

みなさんが積極的な発言をしてくれていて作者だった私はとてもうれしい.
by naruko
Sun Nov 29, 2015 9:20 pm
Forum: Other Retro Dev
Topic: PCEngine 720p digital video out
Replies: 12
Views: 11960

Re: PCEngine 720p digital video out

I have checked SuperGrafx with my 720p adapter.
The result is bad, SuperGrafx's EXTBUS is connected color RAM address by VDC #0. This is not connected to VCE directly.
by naruko
Sun Nov 22, 2015 8:28 am
Forum: Other Retro Dev
Topic: PCEngine 720p digital video out
Replies: 12
Views: 11960

Re: PCEngine 720p digital video out

I understand what means display artifacts!
I will check Rastan Saga II, Volfied and OutRun.

I don't have a flash card. But my adapter PCB has 2pcs 32-DIP socket for 512k x8 SRAM and Flash. I can check your test program. ;)
by naruko
Sun Nov 15, 2015 7:39 pm
Forum: Other Retro Dev
Topic: PCEngine 720p digital video out
Replies: 12
Views: 11960

PCEngine 720p digital video out

[OVERVIEW] I successed digital video outputs for PCEngine. It uses real hardware, no modification, no AD converter. CD excluded PCEngine system has EXTBUS. It contains full CPU buses and dotclock and color RAM address bus(VDC data). I've researched them, EXTBUS outputs perfectlly digital video data ...
by naruko
Sun Sep 27, 2015 10:28 pm
Forum: FCdev
Topic: Namco108's problem on PC $8000-$9fff
Replies: 6
Views: 18670

Re: Namco108's problem on PC $8000-$9fff

FC dev is defined 'Japanese-language board'. I'm confusing why Espozo say "you must write in English". ok, I write my report in poor Engrish. I found that Namco 108 has a errata, It changes bank registers by CPU opcode fetch PC $8000-$9fff and memory write address $0000-$07ff. I ported Win...
by naruko
Sat Sep 26, 2015 9:35 pm
Forum: FCdev
Topic: Namco108's problem on PC $8000-$9fff
Replies: 6
Views: 18670

Re: Namco108's problem on PC $8000-$9fff

- For all four ICs (the 108/109/118/119) mapper 206 のソフトを emulator で10本ぐらい確認しました。発売時期に内部のICは異なるものが入ってますが、ソフトの仕様は同じでした。私が実機で計測したのは 108 だけです。 - If the CPU is executing from $8000-$9FFF - And writes to famicom-internal RAM ($0000-$1FFF) - The mapper IC incorrectly parses that as a write to itself - Cau...
by naruko
Sat Sep 26, 2015 4:26 pm
Forum: FCdev
Topic: Namco108's problem on PC $8000-$9fff
Replies: 6
Views: 18670

Namco108's problem on PC $8000-$9fff

VS.Skykid の daughter board に Wings of Madoola を移植しようとしていましたが動作が不安定でした。 CPU が $8000-$9fff の領域の命令を読んだ後に RAM ($0000-$07ff) write を行うと、 108 への register write と誤認することが頻発することが動作不安定の原因でした。 daughter board の仕様は PPU memory address 0x2000-0x2ffff の設定以外は家庭用の mapper 206 と同じです。 VS.Skykid と 108,109,118,119 が使われている...
by naruko
Wed Sep 09, 2015 9:14 am
Forum: FCdev
Topic: DRGN-D (VS.System)
Replies: 8
Views: 21968

DRGN-D (VS.System)

発表はされたものの、発売中止になってしまった VS.System のソフトがあります。
わたしはマドゥーラの翼とライオネックスというゲームのハードウェアを調査を依頼されました。

DRGN-D はこのゲーム専用に作られたサブボードの名前です。いままで知られている bank controller とは異なる仕様を持ちますが、単純です。ROM image は公開出来ませんが、私が調査したハードウェアの仕様は公開できます。

よろしければご覧ください。
by naruko
Sun Oct 12, 2014 11:35 am
Forum: Reproduction
Topic: [SOLVED] VRC2 to VRC4 conversion
Replies: 7
Views: 6201

Re: VRC2 to VRC4 conversion

VRC2 と VRC4 では CPU address $c000-$dfff の挙動が異なる。 VRC2 では CPU address $c000-$dfff は固定で page = -2 だ。 VRC4 では CPU address $c000-$dfff は半固定で reset 直後には切り替え可能なバンクになっているようだった。エミュレータでは VRC4 のこの page は -2 に設定されているが事実と異なる。 いくつかの VRC4 のROM image を調査したところ、 reset vector address は全て $e000-$ffff になっているのを確認した。 Kona...