1  Information for DEC 21030 Users (aka TGA)
2  The XFree86 Project, Inc.
3  Updates for X11R7.5 by Jim Gettys
4  March 25th, 2004
5  ____________________________________________________________
6
7  Table of Contents
8
9
10  1. DEC 21030
11  2. Authors
12
13
14  ______________________________________________________________________
15
16
17  1.  DEC 21030
18
19
20  o  The DEC 21030 is supported by X11R7.5.  The driver is now partially
21     accelerated. The built-in graphics on the Multia is supported in
22     8-plane mode, and PCI cards with 8 or 16 MB framebuffers are
23     supported in 24-plane mode. TGA2 (aka PowerStorm 3D30/4D20) cards
24     are not currently supported.
25
26  o  Current Known Problems
27
28
29     1. Virtual desktops and multiple modelines do not work. You should
30        specify only one modeline.
31
32     2. Hardware cursor is only supported on systems with the BT485
33        ramdac, ie the Multia.
34
35     3. After the server has been run using the hardware cursor, the
36        Linux TGA console cursor (which also uses the hardware cursor)
37        is shifted down by one pixel. This problem does not affect Linux
38        kernels 2.2.10 and above, which do not use the hardware cursor.
39
40     4. The XAA PolySegment() method is buggy. If you experience server
41        crashes with SIGFPE, or server hangs, try disabling it (see
42        below).
43
44
45  o  The following options may be specified for the 21030 driver:
46
47     BusID
48        Currently it is necessary to specify the BusID so that the
49        server will find the card.  Check /proc/pci and look for the
50        bus, device, and function numbers in the 21030 section. On a
51        Multia, this should be "PCI:0:11:0".
52
53
54     MemBase 0x???????
55        If the server does not detect the base address of the 21030,
56        then check /proc/pci for the 21030 and look for the
57        "Prefetchable 32 bit memory at 0x???????" and enter this as your
58        MemBase setting.
59
60
61     Option
62        Disables acceleration.
63
64
65     Option
66        Disables the hardware cursor.
67     Option
68        Disables the XAA PolySegment() method.
69
70
71
72  2.  Authors
73
74
75  o  Matthew Grossman,  <mailto:mattg@oz.net>
76
77  o  Alan Hourihane,  <mailto:alanh@fairlite.demon.co.uk>
78
79  o  Martin Lucina,  <mailto:mato@kotelna.sk>
80
81  o  Tim Rowley,  <mailto:tor@cs.brown.edu>
82
83
84
85