Newsgroups: alt.cd-rom,sun-managers
Path: cdrom.com!barrnet.net!biosci!agate!howland.reston.ans.net!EU.net!uknet!festival!dcs.ed.ac.uk!jch
From: jch@dcs.ed.ac.uk (Jen Cheng)
Subject: Sony CDU-561 Drive and Sun OS 4.1.3
Message-ID: <CozEDI.AIt@dcs.ed.ac.uk>
Sender: cnews@dcs.ed.ac.uk (UseNet News Admin)
Organization: Department of Computer Science, University of Edinburgh
Date: Thu, 28 Apr 1994 18:08:05 GMT
Lines: 52

We've bought a Sony CDU-561 CD-ROM to use with our SUN SPARC 10
running Sun OS 4.1.3 (Solaries 1.1.1).

When connected, the drive was recognized during booting (also
responded with sensible things when I tried "probe-scsi".

At first, I tried to boot from a system CD-ROM containing Solairs 1.1.1
(Sun OS 4.1.3), it appeared working OK.

However, the problems were discovered when I tried:
    mount -r /dev/sr0 /cdrom
or
    mount -r -t hsfs /dev/sr0 /cdrom

but got the following error messages displayed again and again (I had
to switch off the drive to stop it):

esp0:	data transfer overrun
	State=DATA Last State=RESEL
	Latched stat=0x11<XZERO,IO> intr=0x10<BUS> fifo 0x60
	last msg out: <unknown msg 0xff>; last msg in: IDENTIFY
	DMA csr=0xa4240010<INTEN>
	addr=ff02a000 last=ff029000 last_count=1000
	Cmd dump for Target 6 Lun 0:
	cdb=[ 0x8 0x0 0x0 0x10 0x10 0x0 ]
	pkt_state 0xf<XFER,CMD,SEL,ARB> pkt_flags 0x0 pkt_statistics 0x1
	cmd_flags=0x21 cmd_timeout 180
	Mapped Dma Space:
		Base = 0xff028000 Count = 0x2000
	Transfer History:
		Base = 0xff028000 Count = 0x2000
	current phase 0x1b=RESEL	stat=0x17	0x6	0x0
	current phase 0x5=MSG_IN	stat=0x17	0x4
	current phase 0x28=DISCONNECT	stat=0x17	0x1000
	current phase 0x2c=SAVEDP	stat=0x17	0x1000
	current phase 0x26=DATAIN	stat=0x1	0x1000
	current phase 0x1b=RESEL	stat=0x7	0x6	0x0
	current phase 0x5=MSG_IN	stat=0x7	0x4
	current phase 0x28=DISCONNECT	stat=0x7	0x2000
	current phase 0x2c=SAVEDP	stat=0x7	0x2000
	current phase 0x26=DATAIN	stat=0x11	0x2000
	current phase 0x1b=RESEL	stat=0x17	0x6	0x0
	current phase 0xb=CMD_CMPLT	stat=0x17	0x2000
	current phase 0x27=STATUS	stat=0x17	0x0
	current phase 0xb=CMD_CMPLT	stat=0x13
	current phase 0x1b=RESEL	stat=0x17	0x3	0x0
	current phase 0x5=MSG_IN	stat=0x17	0x4
sr0:	SCSI transport failed: reason 'data_ovr': retrying command
esp0:	data transfer overrun

I wonder whether anybody has experienced something silimar and has
found a solution to this.