wdc MD driver for DC IDE-HD Interface on NetBSD/dreamcast

content maintained by Kiyoshi IKEHARA
content mirrored by unixxx (FuzzyMuzzle.com)
Nagoya University Amateur Radio Club, Japan

Notice:

Please don't e-mail me asking how to make a hardware(e.g. bITmASTER's).
And, all information in this site may be used at your own risk.

News:

• 2002/02/25: An experimental ISA board schematic is available.
• 2002/01/27: IDE(QUANTUM LP85A,80M) + NIC(RTK8019) x 2
• 2001/11/19: ne MD driver is here.

Thanks to bITmASTER, I didn't have to design an interface circuit. Izumi Tsutsui helped me to write the bus driver. And, Masaki Satake and Tatsuya Nishiwaki helped me to make the second version of IDE interface board. Thanks!

About NetBSD/dreamcast

• NetBSD/dreamcast official page

About this driver

• The version of NetBSD-current I use is 1.5W.
• The wdc interrupt handler is invoked by the "callout" routine polling the IRQ signal line.
• DMA/UDMA is disabled because the interface hardware dosen't support DMA transfer mode.
• The performance is not good. (max 840kb/sec)
• BbA(Broadband Adapter) and IDE drive cannot work together.
• CD-ROM drives are probably workable.

Download

For experimental ISA board rev. 0.01

• Schematics
  • Experimental ISA board

For bITmASTER's DC IDE-HD Interface rev 0.1

• Printed board patterns (pcb)
  • dc-connectV1.pcb.gz * (ps) - DC expansion port connector (by Masaki SATAKE)

  • dc-ide_V13c.pcb.gz * (ps) - bITmASTER's DC IDE-HD Interface (by Tatsuya NISHIWAKI)
    updated: 2001/8/3

• Patch for NetBSD-1.5W
  • dcwdc010803.patch

  • Related links
    NetBSD Documentation:
    • Kernel
    • Kernel programming

Dmesg outputs

• WDC #180
• IDE+NICx2

Screenshots

• boot messages
• mount & ls
• disklabel
• read & write
• IDE(QUANTUM LP85A,80M) + NIC(RTK8019) x 2

Pictures

• #1 The complete view of our system
• #2 The interface board
• #3 Master and slave HD drives
• #4 Boot messages
• #5 The ATAPI CD-ROM drive
• IDE(QUANTUM LP85A,80M) + NIC(RTK8019) x 2

Tested drives

• IBM DTLA-305040 HDD, 40GB
• QUANTUM LP85A HDD, 80MB
• Mitsumi 4x CD-RW drive
• SanDisk SDCFB-64 Compact Flash, 64MB

TODO

• Improvement of the performance

  I think the performance can be improved by using an interrupt request signal pin.

Related links

• NetBSD/dreamcast
  • NetBSD/dreamcast official page
  • NetBSD/dreamcast FAQ
  • NetBSD/dreamcast Mailing List archive

• NetBSD/hpcsh
  
  • NetBSD/hpcsh official page

  • NetBSD/hpcsh snapshot

    Binary distributions for NetBSD/dreamcast are currently not available.So I'm using NetBSD/hpcsh binary distributions.

• Dreamcast
  • Dreamcast Programming

• How to run your binary images on DC
  • IP upload slave
  • Bootable CD-Rs
  • Serial upload slave

• How to cross-build NetBSD kernel
  • Cross-building NetBSD

• How to get NetBSD-current
  • Tracking NetBSD-current

Hardwares

IDE Interface

• Our IDE Interface board is based on bITmASTER's DC IDE-HD Interface (it's prerelease ver.).
  • bITmASTER's Dreamcast IDE-HD interface

  74ALS series logic ICs are used in our interface board.

• My DC modem unit was destroyed to get a DC expansion port connector.

IDE HDD

• IBM DTLA-305040

wdc0 at dppbus0
wd0 at wdc0 channel 0 drive 0: <IBM-DTLA-305040>
wd0: drive supports 16-sector PIO transfers, LBA addressing
wd0: 32253 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 66055248 sectors
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5(Ultra/100)

counter: (since 2001.7.9)
ikehara AT c03.itscom.net

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