Re: SBC-188 BIOS 34

[brizza <nbri...@optusnet.com.au>]

Hi John,
All good now !
Turns out i set K1 on the PPIDE wrong. Should have jumpered pin 1-2
with power to the PPIDE board.
Even my ancient Kodak 4meg CF card works now and i have successfully
booted from a 40GB Maxtor drive.
Warning though, setting the jumper on K1 to pins 2-3 and connecting
power to P3 will release the magic smoke !
Regards,
Nik

On Jan 8, 7:57 am, John Coffman <john...@gmail.com> wrote:
> I have a PNY CF card (mfg'd by SanDisk) from my first digital camera, date: '97.  It responds to the ID command.  My other CF cards are all newer.  All support various rev's of the ID command.  The BIOS needs only the most basic information.
> With both the CF cards and the hard disk returning junk from the ID command, I wonder if there is another glitch in the connection:  SBC-188 // PPIDE // IDE2CF // CFcard.  A new CF card is a cheap and simple way to begin to sort out the problem.
> Keep me posted.
> --John
> On 01/07/2011 12:23 AM, brizza wrote:Thanks John. I'll buy a new CF card. I'm already using the faster NEC D71055C. Nik On Jan 7, 6:46 pm, John Coffman<john...@gmail.com>wrote:On 01/06/2011 10:03 PM, brizza wrote:Hi , Just wondering if there is other software i should be using to get the PPIDE working on the SBC188 ? So far no joy accessing C: using CF or hardrive.FDISKreports "NO FIXED DISKS PRESENT" and . CHKDSK and FORMAT both report "INVALID DRIVE SPECIFICATION. JP1 is set for each drive type. I noticed that the CF cards i'm using all report "without LBA suppot".The PPIDE code requires LBA access to all the IDE devices as mentioned in the 08-Dec-2010 notes.  (BIOS034.txt) The cards must also support the IDE  "ID" command (same notes).  Possibly the CF card and disk do not support the ID command, as indicated by the lack of Model, Serial, and Firmware information.  Likewise, the Geometry information is not correct. Considering that the BIOS was developed with some VERY old CF cards, you may have h/w problems with the PPIDE card, or 82C55.  The PPIDE card is so simple, it is unlikely there is any problem, other than the jumpering.  The 82C55 may also have problems.  I recently discovered that a 5Mhz part will not work for me.  I have to use an 8Mhz part (NEC D71055C).  I don't know if increasing the number of wait states for on-board peripherals will allow the slower part to be used.  This is a CONFIG.ASM option. My first suggestion would be to check the speed of the 82C55.  Second, I would try a small, cheap, NEW CF card. --JohnI only have Kodak CF's at the moment but they boot up a P4 with the same IDE adapter easily enough. My build is Version 0 with mods done and using BIOS035 with an NEC D71055C. All the drives are formatted with DOS5.0 prior to use. Print screens of results below; Kodak 10MB CF card: PPIDE fixed disk C: (0x80) Model: Serial: Firmware: Geometry: 104:104:104 without LBA support Current: 104:104:104 capacity: 6815848 LBA Sectors: 6815848 (48-bit): 0x6C006C006C006C A:\>fdiskNo fixed disks present. Maxtor 40GB PPIDE fixed disk C: (0x80) Model: ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ Serial: ÿÿÿÿÿÿÿÿÿÿ Firmware: ÿÿÿÿ Geometry: 65407:65407:65407 with LBA support Current: 65407:65407:65407 capacity: 4286578559 LBA Sectors: 4286578559 (48-bit): 0xFF7FFF7FFF7FFF7F A:\>fdiskNo fixed disks present. Any suggestion would be appre ciated. Cheers, Nik On Dec 9 2010, 12:58 pm, John Coffman<john...@gmail.com>wrote:An updated BIOS034 which supports IDE drives using the Parallel Port IDE interface board (PPIDE) has been posted to the Wiki.  Read the accompanying text file for details. --John