1	Goldstar R420 CD-Rom device driver README
2
3For all kind of other information about the GoldStar R420 CDROM
4and this Linux device driver see the WWW page:
5
6        http://linux.rz.fh-hannover.de/~raupach        
7
8
9      If you are the editor of a Linux CD, you should
10      enable gscd.c within your boot floppy kernel. Please,
11      send me one of your CDs for free.
12
13
14This current driver version 0.4a only supports reading data from the disk.
15Currently we have no audio and no multisession or XA support.
16The polling interface is used, no DMA.
17
18
19Sometimes the GoldStar R420 is sold in a 'Reveal Multimedia Kit'. This kit's
20drive interface is compatible, too.
21
22
23Installation
24------------
25
26Change to '/usr/src/linux/drivers/cdrom' and edit the file 'gscd.h'. Insert
27the i/o address of your interface card.
28
29The default base address is 0x340. This will work for most applications. 
30Address selection is accomplished by jumpers PN801-1 to PN801-4 on the 
31GoldStar Interface Card.
32Appropriate settings are: 0x300, 0x310, 0x320, 0x330, 0x340, 0x350, 0x360
330x370, 0x380, 0x390, 0x3A0, 0x3B0, 0x3C0, 0x3D0, 0x3E0, 0x3F0             
34
35Then go back to '/usr/src/linux/' and 'make config' to build the new
36configuration for your kernel. If you want to use the GoldStar driver
37like a module, don't select 'GoldStar CDROM support'. By the way, you
38have to include the iso9660 filesystem.
39
40Now start compiling the kernel with 'make dep ; make zImage'.
41If you want to use the driver as a module, you have to do 'make modules' 
42and 'make modules_install', additionally.
43Install your new kernel as usual - maybe you do it with 'make zlilo'.
44
45Before you can use the driver, you have to
46   mknod /dev/gscd0 b 16 0
47to create the appropriate device file (you only need to do this once).
48
49If you use modules, you can try to insert the driver.
50Say: 'insmod /usr/src/linux/modules/gscd.o'
51or:  'insmod /usr/src/linux/modules/gscd.o gscd=<address>'
52The driver should report its results.
53
54That's it! Mount a disk, i.e. 'mount -rt iso9660 /dev/gscd0 /cdrom'
55
56Feel free to report errors and suggestions to the following address.
57Be sure, I'm very happy to receive your comments!
58 
59        Oliver Raupach                                Hannover, Juni 1995
60(raupach@nwfs1.rz.fh-hannover.de)
61