OCTA OS

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Octavio

Joined: 21 Jun 2003
Posts: 366
Location: Spain

Octavio 03 Aug 2007, 15:31

FSD wrote:

The new release is identified internally as 0.162.

Is a mistake in the docs, too much heat for my head these days.

03 Aug 2007, 15:31

Octavio

Joined: 21 Jun 2003
Posts: 366
Location: Spain

Octavio 09 Aug 2007, 23:58

Small update of OctaOs , Werner has added support for german keyboard

09 Aug 2007, 23:58

Octavio

Joined: 21 Jun 2003
Posts: 366
Location: Spain

Octavio 15 Feb 2008, 11:42

I have updated my page
octa os v209 news:
hd dma driver
chkdsk & undelete disk tools
now minimum requirements are 4MB ram and 80486 cpu
corrected a lot of bugs

15 Feb 2008, 11:42

tom tobias

Joined: 09 Sep 2003
Posts: 1320
Location: usa

tom tobias 15 Feb 2008, 20:03

Octavio wrote:

...hd dma driver ...

Thanks Octavio. I have a question. In olden times, we used DMA to serve as a kind of SECOND cpu, in a way, i.e. something that could operate more or less in parallel with the main cpu. While the main cpu was crunching numbers, the DMA could bring in the next set of data to be analyzed, for example. However, back then, the DMA speed, circa 5Mhz, and the cpu speed were more or less similar, so the penalty associated with DMA taking over the bus, wresting control from the cpu, was minimal, in the worst case, a duty cycle of 1: 1 was obtained. Yet, today, with cpu's running in multiple gigahertz, the old DMA controller is a bit of an albatross. When it occupies the bus, the cpu is shut out, and that corresponds to 90% of the time, in modern systems....
Do you not find that Octa OS v209 runs quite slowly, with the dma controller active?
Confused

15 Feb 2008, 20:03

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20300
Location: In your JS exploiting you and your system

revolution 15 Feb 2008, 20:41

DMA = can multi-thread now.
DMA = CPU can sleep to save power now.

UDMA = the way to go with modern HDD's

15 Feb 2008, 20:41

Octavio

Joined: 21 Jun 2003
Posts: 366
Location: Spain

Octavio 15 Feb 2008, 20:45

tom tobias wrote:

Octavio wrote:
...hd dma driver ...
Thanks Octavio. I have a question. In olden times, we used DMA to serve as a kind of SECOND cpu, in a way, i.e. something that could operate more or less in parallel with the main cpu. While the main cpu was crunching numbers, the DMA could bring in the next set of data to be analyzed, for example. However, back then, the DMA speed, circa 5Mhz, and the cpu speed were more or less similar, so the penalty associated with DMA taking over the bus, wresting control from the cpu, was minimal, in the worst case, a duty cycle of 1: 1 was obtained. Yet, today, with cpu's running in multiple gigahertz, the old DMA controller is a bit of an albatross. When its occupies the bu, the cpu is shut out, and that corresponds to 90% of the time, in modern systems....
Do you not find that Octa OS v209 runs quite slowly, with the dma controller active?

when i say 'DMA' i'm not talking about 8237 dma chips but about pci bus master or ultra dma.

dma do not occupies the bus ,it just reduces the memory bandwith
for example, if the memory bandwith of my computer(P3 900) is 300MB/s
when the disk is reading data at 58MB/s(40GB barracuda seagate disk) then the memory bandwith will be only 240MB/s but since the cpu works mostly with the cache this is not noticeable.When the disk is not active the speed is the same.
Older PIO driver was much slower it takes about 5 minutes to compute the
MD5 of a 700MB file while with the new driver this is done in 14 seconds.
Now the OS boots from hd 0.2 seconds faster and fasm assembles itself
in 0.0 seconds (0.09?)

Windows and Linux use dma too, not PIO.
If OctaOs now is slower there should be some problem/bug.

15 Feb 2008, 20:45

pfranz

Joined: 13 Jan 2007
Posts: 116
Location: Italy

pfranz 23 Feb 2008, 17:54

I tried OctaOS 0.209 on four machines and I got the following errors:

K6-III 500Mhz 64Mb ram (Hard disk with unusable sector 0): 0006h:0011h
486 with 12Mb ram: 0001h:0000h
Duron 1,1Ghz 128Mb ram: halts working with hard disk
Celeron 1,3Ghz 256Mb ram: same behaviour saying "atapi error"

All tests were made using a (good) floppy, I tried the CD on Duron but I got error 010e: 0005. Version 0.208 works quite fine.
Did anyone in the forum get any problem?
If you want to debug, Octavio, my mail is alway the same.

23 Feb 2008, 17:54

Octavio

Joined: 21 Jun 2003
Posts: 366
Location: Spain

Octavio 23 Feb 2008, 23:40

Thanks for testing, but test the last version 0.210 in version 0.209 i forget
to enable the floppy driver.

does the 486 have math coprocesor?
could you test if octasm for dos works on the 486.

23 Feb 2008, 23:40

Chewy509

Joined: 19 Jun 2003
Posts: 297
Location: Bris-vegas, Australia

Chewy509 24 Feb 2008, 07:04

Octavio wrote:

does the 486 have math coprocesor?

The i486DX, i486DX2, i486DX4 all do, however the i486SX does NOT.

All Pentiums and above do have an integrated FPU.

24 Feb 2008, 07:04

Octavio

Joined: 21 Jun 2003
Posts: 366
Location: Spain

Octavio 25 May 2008, 14:11

I have updated my web with octaos v0.212 and octasm v0.168
there are drivers for usb controllers ehci,ohci and uhci ,ohci is not enabled by default because needs to be tested.

25 May 2008, 14:11

Octavio

Joined: 21 Jun 2003
Posts: 366
Location: Spain

Octavio 08 Jun 2009, 11:35

have updated my web with octaos v0.214.
This is the first version that can boot from usb ,at least on my new Acer aspire one.
There is also a new driver for usb keyboard and mouse.

08 Jun 2009, 11:35

rCX

Joined: 29 Jul 2007
Posts: 172
Location: Maryland, USA

rCX 08 Jun 2009, 20:00

This may be a dumb question but how do you write the USB image to the drive?

08 Jun 2009, 20:00

Octavio

Joined: 21 Jun 2003
Posts: 366
Location: Spain

Octavio 11 Jun 2009, 10:39

rCX wrote:

This may be a dumb question but how do you write the USB image to the drive?

Depends on wich OS do you have.
look here:
https://wiki.ubuntu.com/UNR/Installation/Hard
with octaos i use the menu options copy (img file) and rawrite (usb drive)

11 Jun 2009, 10:39

Octavio

Joined: 21 Jun 2003
Posts: 366
Location: Spain

Octavio 07 Aug 2009, 16:09

v0.215
faster zlib
uses mtrr to increase videomemory speed
compatible with PXE and multiboot booting methods
ide pio drivers
write ext2 files without changing file size

07 Aug 2009, 16:09

Octavio

Joined: 21 Jun 2003
Posts: 366
Location: Spain

Octavio 29 Apr 2010, 16:48

OctaOs version 0.23 can be downloaded here:
http://www.sac.sk/
the filenames are: hd23.zip cd23.zip fd23.zip
news:
v0.23
key F8 writes cache data to disk
transparent read/write zip files
suport for wide screen videomodes (915RES.ASM)
many changes in filesystem code.
virtual filesystem can adress up to 4096 drives of 16 hexabytes
prnscreen works with all videomodes

29 Apr 2010, 16:48

Dex4u

Joined: 08 Feb 2005
Posts: 1601
Location: web

Dex4u 29 Apr 2010, 20:35

Cool nice work, i will give a spin.

29 Apr 2010, 20:35

bogdanontanu

Joined: 07 Jan 2004
Posts: 403
Location: Sol. Earth. Europe. Romania. Bucuresti

bogdanontanu 29 Apr 2010, 21:42

Congratulations Octavio as always Wink

29 Apr 2010, 21:42

pabloreda

Joined: 24 Jan 2007
Posts: 116
Location: Argentina

pabloreda 07 May 2010, 00:09

Nice work Octavio !

Why not make a common interface hard<->SO to make SolarOS, DexOS, OctaOS compatible ? only the minimun

I's only an idea..
I prefers people like you defining a estandar

07 May 2010, 00:09

Octavio

Joined: 21 Jun 2003
Posts: 366
Location: Spain

Octavio 10 May 2010, 16:41

erased by error ¿how can i delete this post?

Last edited by Octavio on 26 Oct 2010, 16:38; edited 2 times in total

10 May 2010, 16:41

Octavio

Joined: 21 Jun 2003
Posts: 366
Location: Spain

Octavio 26 Oct 2010, 16:36

Hello,I have upload Octasm v0.17 (DOS) and Octaos v0.25 to my web page.

News:
Now the same disk image is used for all booting methods: fd,cd,hd,usb...
development tools for atmel avr8 microcontrollers:assembler+flip+headers+some documentation+example code
Dos version of octasm do not includes the usb programmer(flip).

26 Oct 2010, 16:36

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