Search found 2466 matches

by ijor
Wed Jun 13, 2018 4:32 pm
Forum: Coding
Topic: Mega STe differences ?
Replies: 38
Views: 1752

Re: Mega STe differences ?

I just diffed the DMA floppy code between v1.1 and v1.0 and indeed I had rewritten quite a lot it seems. But your info here has made things quite a lot clearer so I'll revisit it. edit: Only the fixed retry code didn't solve it, it really was the verify flag that got it working. However, I never lo...
by ijor
Wed Jun 13, 2018 12:59 pm
Forum: Coding
Topic: Mega STe differences ?
Replies: 38
Views: 1752

Re: Mega STe differences ?

Nicholas got one of the 10 physical discs uniquely written one by one by my deployment system, which is how Closure was distributed ;) The layout should be Fastcopy "interleaved" 80/9. I see. So may be it is his drive after all, although no necessarily a slower settle time. Note that dist...
by ijor
Wed Jun 13, 2018 11:49 am
Forum: Coding
Topic: Mega STe differences ?
Replies: 38
Views: 1752

Re: Mega STe differences ?

Do you mean that if settle is off then even if the WD1772 encouter the index for sector 1 then the index CRC or the data CRC could be wrong and an extra revolution (or more) could be needed to read the sector correctly ? Physically, does it mean that the head is not correctly positioned after 'step...
by ijor
Wed Jun 13, 2018 12:54 am
Forum: Coding
Topic: Mega STe differences ?
Replies: 38
Views: 1752

Re: Mega STe differences ?

The 1st seek is made by TOS at the end of loading 1st part, then custom loader does a restore+steps. Maybe the restore without verify doesn't properly go to track 0, then following "steps" will be on the wrong track too. Unlikely. The Restore command will keep stepping out until sensing t...
by ijor
Tue Jun 12, 2018 7:33 pm
Forum: Floppy Disk Preservation
Topic: Floppy Disk Stream Image Repository
Replies: 50
Views: 8832

Re: Floppy Disk Stream Image Repository

bandit wrote:if you want you can use: http://www.climatics.com/filerun now space/ul/dl limits etc.. i can create users for you...


IMHO. That would be much better than using Mega. Mega is not the right place for this kind of stuff, and not only because of the bandwidth limit.
by ijor
Tue Jun 12, 2018 7:15 pm
Forum: Coding
Topic: Mega STe differences ?
Replies: 38
Views: 1752

Re: Mega STe differences ?

Hi Nicolas, Can't tell the difference, because this STF only has 1 drive, so it's hard to check if it's the drive or the STF ; maybe with a standalone loader program that tries to load the demo from drive B I could try the same floppy on an external drive on the same STF. Depending on the result, it...
by ijor
Tue May 29, 2018 6:37 pm
Forum: Coding
Topic: Mega STe differences ?
Replies: 38
Views: 1752

Re: Mega STe differences ?

where mine was $13, missing the "verify" bit, I guess that might be an important bit I was missing :D Yeah that's the one I had to add to get Closure to load on Nicolas' drive. Seek with verify it's usually not needed. It might suggest some kind of timing problem. May be you were not wait...
by ijor
Tue May 29, 2018 6:32 pm
Forum: Coding
Topic: Mega STe differences ?
Replies: 38
Views: 1752

Re: Mega STe differences ?

Too busy to check the routines, but regarding the delay. TOS delays, that all of us copied, are quite paranoid. There is no need for such huge delays everywhere. Problem is that you really have to know what you are doing for deciding when you need to delay and when not, and for how long. And because...
by ijor
Thu May 24, 2018 1:37 am
Forum: C / PASCAL etc.
Topic: Manual for Lattice C
Replies: 94
Views: 27583

Re: Manual for Lattice C

That's great. Many thanks to all that contributed.

But IMHO, it would be better if it is uploaded to sites like Atarimania or dev-docs.
by ijor
Wed May 23, 2018 4:17 pm
Forum: MiSTer
Topic: Would MiSTer ever be able to run a Neo Geo core?
Replies: 15
Views: 1231

Re: Would MiSTer ever be able to run a Neo Geo core?

The crucial difference is that Genesis carts have 1 bus while those for the NeoGeo have 5. I tried to summarize the maximum bandwidth requirements, hoping I didn't make mistakes: ... Total: 169Mbps The real challenge I'm seeing is the need to interleave all those random accesses while keeping laten...
by ijor
Fri May 18, 2018 12:10 pm
Forum: Floppy Disk Preservation
Topic: Floppy Disk Stream Image Repository
Replies: 50
Views: 8832

Re: Floppy Disk Stream Image Repository

kodak80 wrote:I have exceeded my Mega bandwidth and so am not able to upload at the moment. Didn't even know I had a Mega bandwidth quota. 8O


That's one of the problems with sites like Mega. Changing IP is not always possible, unfortunately.
by ijor
Fri May 18, 2018 12:08 pm
Forum: Floppy Disk Preservation
Topic: Floppy Disk Stream Image Repository
Replies: 50
Views: 8832

Re: Floppy Disk Stream Image Repository

DrCoolZic wrote:kodak80 please check above title list so we do not collide ;)


I recommend to not remove multiple copies of the same title. The most important reason, of course, is that they might be different versions or releases.
by ijor
Thu May 17, 2018 4:50 pm
Forum: Floppy Disk Preservation
Topic: Floppy Disk Stream Image Repository
Replies: 50
Views: 8832

Re: Floppy Disk Stream Image Repository

Great. I'm not a fan of Mega, especially not for this purpose. Chances that they would be removed ...

But at least for the time being, it is just great. Many thanks.
by ijor
Wed May 16, 2018 7:09 pm
Forum: For sale / Wanted
Topic: Wanted: 520 STM PAL
Replies: 9
Views: 668

Re: Wanted: 520 STM PAL

Thanks, I'll contact you by PM later.
by ijor
Wed May 16, 2018 7:08 pm
Forum: Games - Requests
Topic: Warzone / Core Design / 1991
Replies: 28
Views: 3220

Re: Warzone / Core Design / 1991

Sorry, I expressed myself incorrectly. Yes, I know it doesn't work at all with TOS 1.02 as Brume said. But what with TOS 1.0 and 1.4? The sprite is still missing?
by ijor
Wed May 16, 2018 2:46 am
Forum: For sale / Wanted
Topic: Wanted: 520 STM PAL
Replies: 9
Views: 668

Re: Wanted: 520 STM PAL

Hi Greenious. That computer will be used for testing and experimentation, it is not for actual use. I need it to be as close to original Uk computers as possible. That includes the PAL crystal frequencies. And yes, I plan to use it, at least sometimes, without an RGB monitor. I know the PSU is not u...
by ijor
Tue May 15, 2018 7:58 pm
Forum: For sale / Wanted
Topic: Wanted: 520 STM PAL
Replies: 9
Views: 668

Re: Wanted: 520 STM PAL

Hi, thanks for your response. Yes, for a couple of reasons I want the old smaller model (no internal drive, no internal PSU). I would need uk english. The PSU is not big deal. But I need it at the US. Are you located at the US? Otherwise, do you think you can ship safely to the US at an affordable p...
by ijor
Tue May 15, 2018 5:50 pm
Forum: SuperCard Pro Disk Copier
Topic: SCP disk images !
Replies: 560
Views: 145102

Re: SCP disk images !

I agree that we should try to setup our own image repository. But probably 50Gb is not enough. May be somebody can provide more space?
by ijor
Mon May 14, 2018 10:40 am
Forum: Games - Requests
Topic: Warzone / Core Design / 1991
Replies: 28
Views: 3220

Re: Warzone / Core Design / 1991

dlfrsilver wrote:It fails under Steem 3.9.3 even under STE/TOS 1.62. I upgrade to steem 3.9.4.
Under Steem 3.9.4. it loads, but i'm stuck on level 1. The commando sprite doesn't appear. :/


Does it work correctly with STF, TOS 1.0 or 1.02?
by ijor
Sat May 12, 2018 9:02 pm
Forum: For sale / Wanted
Topic: Wanted: 520 STM PAL
Replies: 9
Views: 668

Wanted: 520 STM PAL

Hi,

I am interested to buy a PAL 520 STM. If it was upgraded to 1MB RAM the better, but it's not mandatory. However must be PAL, with modulator, and without internal floppy. Located in the US. Fully working, bare with a working PSU if possible is good enough.

Thanks,
by ijor
Thu May 10, 2018 4:15 pm
Forum: Games - Requests
Topic: Warzone / Core Design / 1991
Replies: 28
Views: 3220

Re: Warzone / Core Design / 1991

I was lazy with the conversion. I edited the post and uploaded a new version of the image. The track warning should not appear anymore, but for some reason that I didn't check, it's still doesn't work under TOS 1.02. As Brume is saying it works with most, if not all, other TOS versions. Brume, I mad...
by ijor
Thu May 10, 2018 2:46 am
Forum: Games - Requests
Topic: Warzone / Core Design / 1991
Replies: 28
Views: 3220

Re: Warzone / Core Design / 1991

Attached a working Pasti image. It was produced from the RAW images provided by dlfrsilver but shifting the index to the correct position.

Edit: Updated the image to a more complete one.
by ijor
Wed May 09, 2018 4:17 pm
Forum: Games - Requests
Topic: Warzone / Core Design / 1991
Replies: 28
Views: 3220

Re: Warzone / Core Design / 1991

Yes, it's possible that it is a duplication defect. But conceivable the original disk might be failing for a different reason.
by ijor
Tue May 08, 2018 2:52 pm
Forum: Games - Requests
Topic: Warzone / Core Design / 1991
Replies: 28
Views: 3220

Re: Warzone / Core Design / 1991

If it's a normal Rob Northen Copylock protected disk and you want to make a working protected copy from a non-working image you could try using the attached util to copy it over any other working copylock keydisk. It just copies the part required for calculating the "magic number" and lea...
by ijor
Tue May 08, 2018 1:22 pm
Forum: Games - Requests
Topic: Warzone / Core Design / 1991
Replies: 28
Views: 3220

Re: Warzone / Core Design / 1991

Very interesting, thanks for the reply, ijor. I don't have original disk of Warzone, but I've taken a look at all Core design games I've dumped. They all use the same CopyLock / Rob Northen protection (some have a different year of release). All work very well with Steem so i was surprised to see W...

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