Search found 311 matches

by Petari
Fri Dec 22, 2017 10:10 am
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: HDD drivers. How does it work?
Replies: 14
Views: 1905

Re: HDD drivers. How does it work?

Cache must be not set off in all cases. It is just simple measure to be sure. Problem appears when DMA writes in RAM area what is cached - and cache size is 16 KB on MSTE. Cache is not aware about it, because that write came not from CPU - while cache control is tied only to CPU. So, there will be d...
by Petari
Fri Dec 22, 2017 7:58 am
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: HDD drivers. How does it work?
Replies: 14
Views: 1905

Re: HDD drivers. How does it work?

Clusters are solved different in DOS Big FAT16 . Logical sector size is always 512 bytes, so 1 phys. sector. And count of sectors in cluster can be: 1, 2, 4, 8 .... up to 256 or even more . That way is better, but needs 32-bit sector addressing. Here is example how it goes in TOS. Partition is 300 M...
by Petari
Thu Dec 21, 2017 9:02 am
Forum: SOFTWARE PROGRAMMING & DISCUSSION
Topic: HDD drivers. How does it work?
Replies: 14
Views: 1905

Re: HDD drivers. How does it work?

Welcome to this little forum, hope we can have here some nice and constructive talk. OK, first some very basic things considering hard disk/mass storage: They are called often 'block devices' - because you need to read whole sector, even if want to read only 1 byte. Usual sector size is 512 bytes - ...
by Petari
Wed Dec 20, 2017 4:33 am
Forum: HARDWARE DISCUSSIONS
Topic: Disk On Modules and Falcon. Questions.
Replies: 5
Views: 789

Re: Disk On Modules and Falcon. Questions.

IDE-Flash is same as DOM, but with case. Old solution.
Good CF=Sandisk. Never had problems on Falcon. But may be that what offer online cheap is just 'Sandisk' .
by Petari
Tue Dec 19, 2017 4:28 pm
Forum: HARDWARE DISCUSSIONS
Topic: Hard disk storage media
Replies: 19
Views: 3497

Re: Hard disk storage media

There are over 3 billion smartphones and tablets around. Practically all of it has SD card slot. They have micro USB conn. too, but it works with Pen drives mostly only on tablets and on more expensive phones. SD card is cheaper for manufacturing. I bought year ago 16GB microSD with 2 adapters - for...
by Petari
Tue Dec 19, 2017 10:22 am
Forum: HARDWARE DISCUSSIONS
Topic: Hard disk storage media
Replies: 19
Views: 3497

Re: Hard disk storage media

... This is just your opininion, we got a lot of positiv opininions about the USB Interface! ... NetUSBee is only Mouse working, Storage isnt working correctly. And also not Fast.. for me our USB Solution isnt slow.. its working very well and the USB Stick is also plug and play. Well, if for you 6x...
by Petari
Tue Dec 19, 2017 8:31 am
Forum: HARDWARE DISCUSSIONS
Topic: Hard disk storage media
Replies: 19
Views: 3497

Re: Hard disk storage media

Considering USB device support: USB is really not for our oldies - as may see, even TT is slow for it. I was thinking about making some adapter, based on some old, cheap, on CPU bus attachable USB chip. But that would need not simple SW, and as said, it would load CPU of Atari a lot. If there is on ...
by Petari
Mon Dec 18, 2017 4:38 pm
Forum: HARDWARE DISCUSSIONS
Topic: Hard disk storage media
Replies: 19
Views: 3497

Re: Hard disk storage media

IDE-SD solution may be currently the cheapest one. I use it in Falcon, and works fine. I did not use IDE to USB, but somehow I don't think that it should need CPU assistance at all on ST side. I mean, adapter self should do the polling - if adapter is made wisely. That 5500 KB/sec is of course on TT...
by Petari
Mon Dec 18, 2017 3:13 pm
Forum: HARDWARE DISCUSSIONS
Topic: Hard disk storage media
Replies: 19
Views: 3497

Re: Hard disk storage media

I have 128MB transcend IDE Flash, bought some 12 years ago - still operational. May be that those modules are better choice, and that ATA timing is better for our oldies. Someone should try them :D Need to look who sells it online ... With CF cards, I say usually: Sandisk is best choice. May be cost...
by Petari
Thu Nov 30, 2017 8:53 am
Forum: CHAT FORUM
Topic: Who designed the Atari chipsets ?
Replies: 9
Views: 1794

Re: Who designed the Atari chipsets ?

... I wonder if Shiraz Shivji can be contacted... I just saw D.Renn in the schematics.. but possible like you say, he just converted the designs. I never got a reply from D.Renn.... :( Getting some reply from some more-less famous old developer is like winning on lottery. That will be really hard. ...