Gryzor - interesting bootleg

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lidnariq
Posts: 11432
Joined: Sun Apr 13, 2008 11:12 am

Re: Gryzor - interesting bootleg

Post by lidnariq »

krzysiobal wrote:Image
74LS670 is LS series logic, so every input is a pullup.
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aquasnake
Posts: 515
Joined: Fri Sep 13, 2019 11:22 pm

Re: Gryzor - interesting bootleg

Post by aquasnake »

zxbdragon wrote: Sun May 13, 2018 4:16 pm
lidnariq wrote:
zxbdragon wrote:ks7049 is vrc2 clone, I dumped.
But the mapper IC (KS204) only has 28 pins?
yes,this cart rom working 23

CRC: 295EFA08
SHA-1: 8F4202AEACC78877DD69718EE184096CC6C7F881
System: NES-NTSC
Board: KONAMI VRC2/Mapper 23, Mapper 23
PRG-ROM: 128k
CHR-ROM: 128k
W-RAM: 8k
Solder Pad: H:0 V:1
Dump: Unknown


contra (ks-7049)_001.png


类似的卡带应该还有双截龙2 MAPPER 127 (但我一直没有找到这个ROM或卡带)
this cart can't be Kaiser's conversion. It might be a repro of another pirate group named CYEE.

here mapper326 has 7-bit latch input
zxbdragon
Posts: 498
Joined: Mon Dec 12, 2011 8:15 pm

Re: Gryzor - interesting bootleg

Post by zxbdragon »

aquasnake wrote: Tue Nov 24, 2020 6:39 am
zxbdragon wrote: Sun May 13, 2018 4:16 pm
lidnariq wrote:But the mapper IC (KS204) only has 28 pins?
yes,this cart rom working 23

CRC: 295EFA08
SHA-1: 8F4202AEACC78877DD69718EE184096CC6C7F881
System: NES-NTSC
Board: KONAMI VRC2/Mapper 23, Mapper 23
PRG-ROM: 128k
CHR-ROM: 128k
W-RAM: 8k
Solder Pad: H:0 V:1
Dump: Unknown


contra (ks-7049)_001.png


类似的卡带应该还有双截龙2 MAPPER 127 (但我一直没有找到这个ROM或卡带)
this cart can't be Kaiser's conversion. It might be a repro of another pirate group named CYEE.

here mapper326 has 7-bit latch input
what?cyee is kaiser staff....
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aquasnake
Posts: 515
Joined: Fri Sep 13, 2019 11:22 pm

Re: Gryzor - interesting bootleg

Post by aquasnake »

zxbdragon wrote: Wed Nov 25, 2020 7:27 am
aquasnake wrote: Tue Nov 24, 2020 6:39 am
zxbdragon wrote: Sun May 13, 2018 4:16 pm
yes,this cart rom working 23

CRC: 295EFA08
SHA-1: 8F4202AEACC78877DD69718EE184096CC6C7F881
System: NES-NTSC
Board: KONAMI VRC2/Mapper 23, Mapper 23
PRG-ROM: 128k
CHR-ROM: 128k
W-RAM: 8k
Solder Pad: H:0 V:1
Dump: Unknown


contra (ks-7049)_001.png


类似的卡带应该还有双截龙2 MAPPER 127 (但我一直没有找到这个ROM或卡带)
this cart can't be Kaiser's conversion. It might be a repro of another pirate group named CYEE.

here mapper326 has 7-bit latch input
what?cyee is kaiser staff....
I didn't know cyee was a Kaiser employee. But your dumper may have transcoded $8010 - $8017 to $b000 - $E003

If so, the CPU_ A [14] an additional pin(i don't know which address line exactly is) controls an 8-bit (or two 4-bit) latche(s) to latch upper and lower half bytes respectively.

If using a dumper such as copynes, you may get the ROM that has been decoded rather than that has the original data order
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Snacks
Posts: 40
Joined: Mon Feb 04, 2013 10:47 pm
Location: NTDEC

Re: Gryzor - interesting bootleg

Post by Snacks »

first picture is my personal cartridge and its credited as cyee instead konami
The 100 Mega Shock
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Snacks
Posts: 40
Joined: Mon Feb 04, 2013 10:47 pm
Location: NTDEC

Re: Gryzor - interesting bootleg

Post by Snacks »

just curious:
kaiser uses toshiba as maskrom provider (wow, thats full quality)
or this dip24 roms are otp?
The 100 Mega Shock
hacksquad
Posts: 20
Joined: Sat Mar 14, 2020 10:45 pm

Re: Gryzor - interesting bootleg

Post by hacksquad »

I just received a very early version of contra bootleg cartridge, i haven't open it yet but i can confirm it is the japanese version, i'll post some pcb pictures soon
Untitled.png
hacksquad
Posts: 20
Joined: Sat Mar 14, 2020 10:45 pm

Re: Gryzor - interesting bootleg

Post by hacksquad »

Here is my copy of Contra bootleg pcb
1.jpg
2.jpg
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krzysiobal
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Joined: Sun Jun 12, 2011 12:06 pm
Location: Poland
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Re: Gryzor - interesting bootleg

Post by krzysiobal »

This is just ordinary VRC II. Interestngly, your PCB looks like almost identical copy of original one, just without those "tracks to nowhere": (used for plating)
https://nescartdb.com/profile/image/380 ... =pcb_front
Image My website: http://krzysiobal.com | Image My NES/FC flashcart: http://krzysiocart.com
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