Search found 206 matches

by Zippy
Thu Aug 13, 2020 1:22 pm
Forum: Hardware
Topic: Identify This Board?
Replies: 34
Views: 1333

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: 7
Views: 217

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: 34
Views: 1333

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: 34
Views: 1333

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: 34
Views: 1333

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: 34
Views: 1333

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: 34
Views: 1333

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: 34
Views: 1333

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: 237
Views: 75752

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: 2
Views: 308

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: 24177

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: 34
Views: 1333

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: 34
Views: 1333

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: 34
Views: 1333

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: 24
Views: 8068

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: 4
Views: 327

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.
by Zippy
Thu Jul 16, 2020 6:07 pm
Forum: News & Announcements
Topic: Protector
Replies: 4
Views: 327

Re: Protector

I guess because no one we knew had 4MB or an STE at the time so the bug went undetected for years while the disks spread far and wide.

We were releasing stuff for cheap bastards like ourselves who had 1MB or 2.5MB STFM's. :D

I didn't write it so don't blame me. :D
by Zippy
Sun Jun 28, 2020 5:34 pm
Forum: Hardware
Topic: Atari STE: Drive A: diplays files with cryptic extensions
Replies: 29
Views: 890

Re: Atari STE: Drive A: diplays files with cryptic extensions

I think there's something about the FDC dealing wth 16 ($10) bytes at a time, but not sure if it actually has a 16 byte hardware buffer or exactly how it works, or if the 16 byte chunks are processed by the DMA hardware. The file extension part will always be at the same offset into every 16 byte bl...
by Zippy
Sat Jun 27, 2020 11:45 am
Forum: Games - Requests
Topic: Games without good source
Replies: 15
Views: 24177

Re: Games without good source

Mercenary 3.st
Here's a very "quick and dirty" fix. Now has a slight extra delay while copying almost full memory around before starting game though.
by Zippy
Sat Jun 27, 2020 10:58 am
Forum: Games - Requests
Topic: Games without good source
Replies: 15
Views: 24177

Re: Games without good source

Not to forget, some cracks is duff from the start, those I cant do much about. For example. GFX error in Title Picture on Mercenary 3 - Cynix. probly a packer issue. Not my crack but I took a quick look at it. The game itself is not corrupted, it's just that the code is using all memory from $2000 ...
by Zippy
Tue May 05, 2020 5:54 pm
Forum: Professionals
Topic: Fastest way to move 256 words on 68030 TT for 4096 colour display
Replies: 42
Views: 4637

Re: Fastest way to move 256 words on 68030 TT for 4096 colour display

If it's just to display a static high colour pic could you wait until the start of the right border (by cycle counting from the hbl) before changing the palette? That would give you the whole right and left borders to switch colours before the line with those colours was displayed. Of course that wo...
by Zippy
Sun May 03, 2020 1:44 pm
Forum: News & Announcements
Topic: Leonard Tramiel Exclusive Text Interview - Great Atari Insight
Replies: 10
Views: 540

Re: Leonard Tramiel Exclusive Text Interview - Great Atari Insight

Nice interview, thanks.

If anyone's interested in more info. on Chuck Peddle and his development of the 6502 there's a great interview with him over here :

https://www.youtube.com/watch?v=enHF9lMseP8

nearly 4 hours, but well worth a watch!
by Zippy
Sun Apr 26, 2020 12:00 am
Forum: Coding
Topic: Trying to reverse engineer the game “Méwilo”
Replies: 3
Views: 535

Re: Trying to reverse engineer the game “Méwilo”

It's an early Cocktel Vision game so presumably using a similar interpreter system to the ST games Freedom and Emmanuelle, both of which were a nightmare to hack due to the interpreter (although I found out later that an attack on the TOS random number generation routine makes it quite easy to defea...
by Zippy
Tue Mar 24, 2020 12:23 pm
Forum: For sale / Wanted
Topic: WTD: PLUTOS by Micro Value
Replies: 24
Views: 8068

Re: WTD: PLUTOS by Micro Value

Mindscape release available here:

https://www.ebay.co.uk/itm/324113047536

Go to advanced search