Search found 215 matches

by Zippy
Fri Jan 29, 2021 1:19 am
Forum: Demos - Requests
Topic: Has anyone extracted Stampede 1 and 2 intros?
Replies: 12
Views: 902

Re: Has anyone extracted Stampede 1 and 2 intros?

Haha, this has more protection than a lot of games did! As well as the RN external it has 2 RN internals + checksums of the internals + checksums of the scroller text + self modifying code. It's also hiding code that's playing around with the reset vector but not 100% sure what that was doing. Hopef...
by Zippy
Thu Jan 28, 2021 11:05 pm
Forum: Demos - Requests
Topic: Has anyone extracted Stampede 1 and 2 intros?
Replies: 12
Views: 902

Re: Has anyone extracted Stampede 1 and 2 intros?

Yes that looks like a slightly unusual way of checking the RN magic number. Did you try NOP, NOP over the BNE at $2164 and another NOP. NOP over the BNE at $216e? Is the RN internal check immediately before the stuff there from $215e or has it already run already and it just jumps to $215e for the c...
by Zippy
Wed Jan 27, 2021 6:34 pm
Forum: Demos - Requests
Topic: Has anyone extracted Stampede 1 and 2 intros?
Replies: 12
Views: 902

Re: Has anyone extracted Stampede 1 and 2 intros?

Did you try with the gamecracker for the RN internal *after* using Dec0de to remove the external? That might work, but you'd need the dec0ded version saved back to the original disk with the protection still working for the gamecracker to work on it. Either that or just remove the internal manually ...
by Zippy
Sun Dec 06, 2020 5:24 pm
Forum: Games - General
Topic: Missing Games 2018
Replies: 35
Views: 20747

Re: Missing Games 2018

Not sure if this is the same "Freedom" you mean but this is the crack of Cocktel Vision game "Freedom" in English .
Freedom - Medway Boys.zip
by Zippy
Tue Nov 24, 2020 2:07 pm
Forum: News & Announcements
Topic: A small present from the 90s...
Replies: 12
Views: 1425

Re: A small present from the 90s...

The Computer Depot... what a great place, a real Aladdin's cave where you never knew what (or who) you might find. I don't remember buying much (if any) ST software there but I did get quite a bit of BBC micro software there in the 80's. Shops like that and Microworld and Glasgow Computer Center wer...
by Zippy
Sat Nov 21, 2020 9:25 am
Forum: Floppy Disk Preservation
Topic: Floppy Disk Stream Image Repository
Replies: 345
Views: 104876

Re: Floppy Disk Stream Image Repository

Mikerochip wrote: Fri Nov 20, 2020 5:49 pm It's like meeting a celebrity, isn't it :P 8)
And we all know what to do with those...

https://www.youtube.com/watch?v=Q4ox7CvSUIA

:P :D
by Zippy
Fri Nov 20, 2020 11:21 am
Forum: Floppy Disk Preservation
Topic: Floppy Disk Stream Image Repository
Replies: 345
Views: 104876

Re: Floppy Disk Stream Image Repository

Interesting about the cheap duplicators. What did they do in that case, create 'cracked' copies of the games? I've heard various people talking about budget games and in one case (In SPS), saying at least one release used a 'scene' crack on their release!! I made quite a few of the official budget ...
by Zippy
Tue Nov 17, 2020 10:30 am
Forum: News & Announcements
Topic: A small present from the 90s...
Replies: 12
Views: 1425

Re: A small present from the 90s...

Good to know it was converted from the Acorn Archimedes (which was an amazing machine) to the Falcon. Did you ever have an Archimedes? I had an A3000 for a few months in 1991 (until I swapped it for a Jap Super Famicom) and made a couple of simple demo screens on it to have a play with ARM code. I ...
by Zippy
Sun Aug 16, 2020 4:32 pm
Forum: Games - General
Topic: Anarchy - Psygnosis
Replies: 7
Views: 1384

Re: Anarchy - Psygnosis

Codetapper did some analysis of the technique used for the scrolling :

https://codetapper.com/atari-st/st-games/st-anarchy/
by Zippy
Thu Aug 13, 2020 1:22 pm
Forum: Hardware
Topic: Identify This Board?
Replies: 48
Views: 6202

Re: Identify This Board?

Got the board from MiggyMog today, thanks. It's the same as the board in the 1st picture of the thread except that the 4 logic chips are surface mounted (soldered by hand and not even straight in 1 case!). The code on the 8048 is identical to that used in the other board design, so probably all thes...
by Zippy
Tue Aug 11, 2020 7:59 pm
Forum: The Atari 8bit corner
Topic: Spectracube Invasion - Information Needed
Replies: 9
Views: 1657

Re: Spectracube Invasion - Information Needed

That looks like an Atari 2600 8-bit game, this forum is really dedicated to the later Atari 16/32 bit machines.

You could try over at https://atariage.com/forums/ , they have a specific Atari 2600 forum.
by Zippy
Mon Aug 10, 2020 9:12 am
Forum: Hardware
Topic: Identify This Board?
Replies: 48
Views: 6202

Re: Identify This Board?

I'll post you the board this afternoon, so should be with you next week. Does Ghidra specifically support the MCS48 series of mcu's or did you select some other Intel 8 bit cpu to get the disassembly? I tried with IDA Pro but my version doesn't support MSC48 and trying with other 8 bit Intel chips l...
by Zippy
Sun Aug 09, 2020 4:12 pm
Forum: Hardware
Topic: Identify This Board?
Replies: 48
Views: 6202

Re: Identify This Board?

Great work, I think that pretty much solves the mystery of this board.

I can send you the PCB if you want to do further analysis on it?
by Zippy
Sat Aug 08, 2020 8:08 pm
Forum: Hardware
Topic: Identify This Board?
Replies: 48
Views: 6202

Re: Identify This Board?

ijor wrote: Sat Aug 08, 2020 8:02 pm What might be important is the frequency of the crystal. Can you read it or measure it?
Is that the green box thing? It's a Fujitsu part, marked 6000 then NMZ below.
by Zippy
Sat Aug 08, 2020 8:00 pm
Forum: Hardware
Topic: Identify This Board?
Replies: 48
Views: 6202

Re: Identify This Board?

Try this one, with those 2 IC's removed :

https://ufile.io/48r80x85
by Zippy
Sat Aug 08, 2020 6:40 pm
Forum: Hardware
Topic: Identify This Board?
Replies: 48
Views: 6202

Re: Identify This Board?

Couple of hi-res pics of the board here, might help: https://ufile.io/kaxwjva4 some pins on the 8048 were bent and broken on the solder side and as the board was being scrapped I wasn't all that careful with the desoldering , so as you can see some pads got lifted, but you can maybe still see the la...
by Zippy
Sat Aug 08, 2020 3:01 pm
Forum: Hardware
Topic: Identify This Board?
Replies: 48
Views: 6202

Re: Identify This Board?

Got the board from "sety" today and have just removed and dumped the chip. No problem with reading and verifying it with my Elnec programmer so seems to be a 100% good dump. It has 1K of ROM but only about 256 bytes used so can't be doing much. Anyone care to look at the code? I checked IDA and it d...
by Zippy
Thu Aug 06, 2020 7:50 pm
Forum: Floppy Disk Preservation
Topic: Floppy Disk Stream Image Repository
Replies: 345
Views: 104876

Re: Floppy Disk Stream Image Repository

Having also done the Atari Power Pack, none of them seem to exhibit the standard Copylock patterns as the Summer Pack did. Not sure which set of freebie disks were released with the STFM models first. I think it was the Summer pack first, then the Super pack, then the Power pack. When I got my 520S...
by Zippy
Wed Jul 29, 2020 5:36 pm
Forum: Website Discussions
Topic: SSL certificate chain borked
Replies: 6
Views: 1211

Re: SSL certificate chain borked

I use ighome (replacement for the old Igoogle if anyone remembers that?) for various RSS feeds and recently every one stopped worked via https from Chrome , I switched to just accessing ighome with http and they all worked again. The https connection still works to ighome via Opera browser , so appe...
by Zippy
Wed Jul 29, 2020 12:55 am
Forum: Games - Requests
Topic: Games without good source
Replies: 15
Views: 27926

Re: Games without good source

Is there a complete list anywhere of what's on all these ST game DVD's or available online or whatever? I've been given a couple of ST disk collections and was wondering if there could be anything worth sharing. Is there any interest in a different crack of a game that's already available from some ...
by Zippy
Thu Jul 23, 2020 8:38 am
Forum: Hardware
Topic: Identify This Board?
Replies: 48
Views: 6202

Re: Identify This Board?

Cool, will PM you both. :)

Thanks.
by Zippy
Wed Jul 22, 2020 3:33 pm
Forum: Hardware
Topic: Identify This Board?
Replies: 48
Views: 6202

Re: Identify This Board?

I have a professional Elnec universal programmer that lists support for the 8048 so it should be no problem. When I select the 8048 the only note for "Device info" is "Read only" , obviously as it's a mask ROM device, size automatically changes to 1K ($400 x 8 ) so all seems good. This one : https:/...
by Zippy
Wed Jul 22, 2020 2:08 pm
Forum: Hardware
Topic: Identify This Board?
Replies: 48
Views: 6202

Re: Identify This Board?

If the code is of interest to anyone (and assuming the MCU isn't code protected to prevent reading) I have the tools to desolder the chip from the board and a programmer that can read it.
by Zippy
Fri Jul 17, 2020 12:17 pm
Forum: For sale / Wanted
Topic: WTD: PLUTOS by Micro Value
Replies: 25
Views: 10355

Re: WTD: PLUTOS by Micro Value

Micro Value version here:

https://www.ebay.co.uk/itm/283949980620
by Zippy
Thu Jul 16, 2020 9:06 pm
Forum: News & Announcements
Topic: Protector
Replies: 5
Views: 1196

Re: Protector

^^ Ah yes, that sounds familiar now you mention it, that may be why IV appeared.

I possibly have the source code somewhere but I wasn't involved with the development of the whole virus protector thing at all.

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