SymbOS MSX multitasking operating system - help needed!

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By flyguille

Prophet (3029)

flyguille's picture

27-10-2015, 20:52

edoz wrote:

Enribar https://www.youtube.com/watch?v=XJ9bBPxA6DE did you saw this movie ? Must be working for you as well ? as it uses also a drive B

nice video of real usage.

By Prodatron

Paragon (1788)

Prodatron's picture

27-10-2015, 21:04

@Enribar, I am sorry about the issues, but that was a good finding by EdoZ, you should really have a look at this video and the simple way how to install it on the MegaSD cartridge.

edoz wrote:

Enribar https://www.youtube.com/watch?v=XJ9bBPxA6DE did you saw this movie ? Must be working for you as well ? as it uses also a drive B

@Flyguille: This is also one of my favourite ones :)
https://www.youtube.com/watch?v=ruHpqPTT9w0

Here is a whole collection:
https://www.youtube.com/playlist?list=PLWmYjzhKSxptZ0zIr2S4r...

By enribar

Paladin (992)

enribar's picture

27-10-2015, 23:46

ok guys thankyou very much for the video infos.
The only one difference I see from my setup procedure, is that I plug MegaFlahRom SD into slot2 of the 8245.
In this case the Mega-SD drive labeled B: is found by SymbOS as location 23 (hope to write correctly, try to understand anyway).
Unfortunately slot1 is out of work, so i must use slot2 for MFR and SymbOS.
Is there a way to have from you a pre-configured symbos that works with my installation?

By edoz

Prophet (2159)

edoz's picture

28-10-2015, 09:56

It's good that the MegaflashRom SD is detected as location 2-3. This is because the MegaFlash acts like a slot expander where the storage controller is in 2-3. So that's OK. It doesn't matter if you insert it in slot 1 or slot 2. So slot 2 must work also.

Do you get an error ? Or can you send a screen-shot to explain yourself more ? How this you create your partitions on your SD card ?

By Robby

Master (165)

Robby's picture

20-12-2015, 18:35

Hi,

A Question. Did anyone succeeded in installing & startup symbos succesfully with a ls120 drive and/or zipdrive (sunrise interface)?
When i'm installing symbos2.1 on my ls-120 drive symbos will start, but when the desktop is displayed it will freeze immediately and i can only reset my msx (8250/1mb).
The ls120 drive is working correctly with dos2. The drive is configured as master as also set during setup, and partition 4 (dos2 a-partition) is selected.
When i use the same ide-interface together with a sunrise cf-adapter, symbos will start up normally.
Any ideas?

Robby.

By edoz

Prophet (2159)

edoz's picture

20-12-2015, 19:37

How did you create your partitions on your ZIP drive? SymbOS supports only primary partitions. Not extended. Note that sunrise IDE partitions are mixed up compaired to the Microsoft FAT standard. So drive A in MSXDOS is most of the time partition 4,C=3, B=2 and A=1. This could be a problem. Unfortunately i do not own a ZIP IDE drive so i cannot test it for you. You could try to choose an other partition number during the SYMSETUP.COM or try to re-partition your ZIP drive on a Windows machine. (if you have a spare one) Are ZIP drives working the same as a IDE HD?

If the volume is not partitioned you could try to choose option 0.

After SymbOS is loaded is the background image loaded before freezing ?

By edoz

Prophet (2159)

edoz's picture

20-12-2015, 20:26

BDW: Did you also load other storage adapters beside the Sunrise IDE ? (Like the internal Philips driver for the floppy?) Or only the Sunrise IDE driver?

By Prodatron

Paragon (1788)

Prodatron's picture

20-12-2015, 20:39

Hi Robby, sorry for not answering before. Right now I got an idea why it probably doesn't work/hangs. The LS120 is probably not supporting the LBA sector addressing mode, but only CHS addressing mode. Some monthes ago I figured out, that my IDE drivers (at least the one for the Amstrad CPC) would crash when doing a special LBA/CHS check during initialization (I never had a CHS device for testing). I am quite sure, that this is the reason for your problems, as CF cards support LBA. I am now thinking about a CHS version of the driver, which can be used for these old devices.
Is it possible to find out, if the LS120 doesn't support LBA?

By Robby

Master (165)

Robby's picture

20-12-2015, 22:48

Hi Edoz & Prodatron,
Thank you for the replies.
@Edoz: i've created the partitions with fdisk310, and set the first one as a boot partition (B), and installed Symbos on drive a. Like you mention, i've assigned partion 4 to it (reversed order). The background image isn't loaded yet, it will freeze before that.

@Prodatron: i do not know (yet) about about the LBA or CHS adressing mode. I will try to find some specifications of the LS-120 drive, and come back to it later. Thank you.

Robby.

By edoz

Prophet (2159)

edoz's picture

20-12-2015, 23:10

Robby wrote:

Hi Edoz & Prodatron,
Thank you for the replies.
@Edoz: i've created the partitions with fdisk310, and set the first one as a boot partition (B), and installed Symbos on drive a. Like you mention, i've assigned partion 4 to it (reversed order). The background image isn't loaded yet, it will freeze before that.

@Prodatron: i do not know (yet) about about the LBA or CHS adressing mode. I will try to find some specifications of the LS-120 drive, and come back to it later. Thank you.

Robby.

It seems not: (from wikipedia)

The true capacity of these "SD120MB" drives[1] is 120.375 MiB aka 126.22 MB (FAT16B with logical geometry 963/8/32 CHS × 512 bytes). The "SD240MB" drives have a capacity of 229.25 MiB aka 240.39 MB (FAT16B with logical geometry 262/32/56 CHS × 512 bytes). 1.44 MB HD floppies formatted to 32 MB as "FD32MB" (FAT16B with logical geometry 1024/2/32 CHS × 512 bytes) in the LS-240 show a dummy FAT12 file system (with logical geometries 160/2/9 or 80/2/18) when inserted into a normal floppy drive.

Prodatron and i had a small discussing today by chat and he was thinking that the BIOS of the sunrise maybe only supports CHS and not LBA (Which is newer). So if someone can confirm this than that is the case.

The drivers for storage in SymbOS are talking directly to the hardware and are not using the ROMs (in this case from the SUNRISE IDE) So that explains why it is working in MSXDOS and not in SymbOS. Probably every storage device in MSXDOS is using the CHS mode on the sunrise IDE ?

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