Search found 594 matches

by iss
Sat May 19, 2018 1:21 pm
Forum: Tape and floppy disk converters
Topic: Oric DSK Manager
Replies: 29
Views: 1623

Re: Oric DSK Manager

Hello, overCLK! Great utility. I've tested the github version with your last fix and there is no error message. But when extracting the PATCH.001 file the result is 268 bytes which contain data only for the 1-st part (chunk) of 3 total. PATCH.001.png Here is the info which describes what PATCH.001 i...
by iss
Fri May 18, 2018 8:53 am
Forum: Operating systems
Topic: INSERT MASTER DISC IN DRIVE A
Replies: 6
Views: 231

Re: INSERT MASTER DISC IN DRIVE A

Attached is Sedoric 3.006 + patches. I don't remember where from I've got the file, but it seams to be very OK :). It contains PATCHHELP.001 and PATCHHELP.002 which expain the purpose of the patches and the addresses where they are applied - type the name to run it - it will display the info ot the ...
by iss
Wed May 16, 2018 7:45 am
Forum: Emulators
Topic: Clock Signal — an Oric emulator for macOS and Linux
Replies: 57
Views: 21218

Re: Clock Signal — an Oric emulator for macOS and Linux

Great work, ThomH! I'm deeply impressed by your DISK][ emulation (for both - Apple][ and 8DOS). It helped me already to rescue (partially, because of really bad floppy disks :cry:) some antique software and now I can "close the case" which waited ~15 years :). Thanks! I'm waiting for some "developer...
by iss
Sat May 12, 2018 9:24 am
Forum: Emulators
Topic: JOric
Replies: 84
Views: 4395

Re: JOric

NekoNoNiaow wrote:
Sat May 12, 2018 2:51 am
... make sure that the BASIC really is an MS derivative.
The answer is in old posts.
Try the short BASIC program there, it's fun ;).
by iss
Wed May 09, 2018 8:16 am
Forum: Technical questions
Topic: 8DOS: overlay RAM control?
Replies: 6
Views: 428

Re: 8DOS: overlay RAM control?

Yes, exactly after 00:A the counter hides, blinking cursor is restored and you are in BASIC. BTW, this version (and in particular 130.dsk image) freezes in real hardware too in the same way! How are working other versions (i.e. 100.dsk, 210.dsk and 231.dsk)? And two questions about CLKSIGNAL: where ...
by iss
Tue May 08, 2018 6:04 pm
Forum: Games
Topic: Upgrade Time: Encounter
Replies: 75
Views: 4495

Re: Upgrade Time: Encounter

Great videos, Dbug!
Off-topic: I'm curious what is the red/black "thing" sitting on the shelf with the small label "....-3DX"?
EDIT: I cut the "thing" from picture and tried google image search with string 3dx and the result is "MicroScribe 3DX Desktop Digitizer". Nice toy indeed! :)
by iss
Tue May 08, 2018 4:15 pm
Forum: Operating systems
Topic: FastBoot/FastLoad on Pravetz 8D/Disk II
Replies: 35
Views: 2274

Re: FastBoot/FastLoad on Pravetz 8D/Disk II

@ThomH: Yep, you are right - there is no physical interleaving on real disks too. Else bringing the old DISK][ back to life is almost done I'll post pictures/video of the result soon. :) I've created small utility for calibration of the rotation speed. It's based on old utility for Apple ][ which I ...
by iss
Tue May 08, 2018 3:22 pm
Forum: General Discussion
Topic: Oric Explorer v2.0 is up for adoption!!!
Replies: 10
Views: 423

Re: Oric Explorer v2.0 is up for adoption!!!

Great news about resurrecting OricExplorer! Actually, I was one of the few lucky to download sources when they were available on the main site. So I have since long time sources of both versions: Screenshot_20180508_163336.png Maybe you have something which is more recent. Else about the portability...
by iss
Mon May 07, 2018 12:45 am
Forum: Technical questions
Topic: Oric-1 16k memory management
Replies: 8
Views: 285

Re: Oric-1 16k memory management

Geoff Phillips says in his book : 1.4 Differences between machines From the point of view of hardware, there are very few differences between machines. There are two major categories: Your Oric is either a 16K or a 48K machine. Your Oric is either version 1.0 (i.e., the ORIC-1) or 1.1 (i.e., the ORI...
by iss
Sun May 06, 2018 11:24 pm
Forum: Tape and floppy disk converters
Topic: Experimental very fast tape loading
Replies: 106
Views: 11505

Re: Experimental very fast tape loading

Some of my Orics have zener diodes at the input of the OpAmplifier. The idea is to limit the input amplitude of the signal (also good for protection) but this can change the required volume level. If you can open your Orics and take pictures on the analog part (on left side of the ULA) and note whic...
by iss
Sat Apr 28, 2018 1:33 pm
Forum: Operating systems
Topic: FastBoot/FastLoad on Pravetz 8D/Disk II
Replies: 35
Views: 2274

Re: FastBoot/FastLoad on Pravetz 8D/Disk II

I've created simple utility which prints the order of sectors in each track. It's based on the loading routine. The sector number is extracted from the address field. I expected to see some interleave but the result shows natural order ... which puzzles me :shock: . In Oricutron: mapper.jpg And with...
by iss
Sat Apr 28, 2018 1:16 pm
Forum: Operating systems
Topic: FastBoot/FastLoad on Pravetz 8D/Disk II
Replies: 35
Views: 2274

Re: FastBoot/FastLoad on Pravetz 8D/Disk II

Apple nibbles are '5+3' for the old 13 sector format, and '6+2' for the 16 sectors format which we are using. First are read 256 octets, they hold 256 x 6-bit bytes and next 86 octets give additional 2 bits. I succeeded to fix loading with help of temp 256-bytes buffer without any speed impact! :) H...
by iss
Thu Apr 26, 2018 9:31 pm
Forum: Operating systems
Topic: FastBoot/FastLoad on Pravetz 8D/Disk II
Replies: 35
Views: 2274

Re: FastBoot/FastLoad on Pravetz 8D/Disk II

So no a bug... a feature ? ;)
Sure! The most important thing is always to think positively :).
by iss
Thu Apr 26, 2018 9:27 pm
Forum: Technical questions
Topic: 8DOS: overlay RAM control?
Replies: 6
Views: 428

Re: 8DOS: overlay RAM control?

I guess the engineers at Pravetz really internalised the idea of soft switches! The engineers from Pravets only stole Oric but they forgot to 'borrow' Microdisc too. :) The FDC is entirely 'one man show' - the author of the hardware and DOS-3.3 adaptation is Borislav Zachariev - student at that tim...
by iss
Thu Apr 26, 2018 8:43 pm
Forum: Operating systems
Topic: FastBoot/FastLoad on Pravetz 8D/Disk II
Replies: 35
Views: 2274

Re: FastBoot/FastLoad on Pravetz 8D/Disk II

Thanks for the rich info about NIB and WOZ image formats, ThomH! The minimum I wish to add to Oricutron is support of any sector interleave. Else I think it's not worth to add half- and quarter-track positioning ability and all that stuff which in the Apple's world is used for different protection s...