source: rtems/bsps/m68k/mvme147s/README @ b82a4b4

Last change on this file since b82a4b4 was eb36d11, checked in by Sebastian Huber <sebastian.huber@…>, on Apr 25, 2018 at 1:06:08 PM

bsps: Move documentation, etc. files to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

  • Property mode set to 100644
File size: 2.0 KB
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1Notes about the MVME147S bsp
2
3MVME147 port for TNI - Telecom Bretagne
4by Dominique LE CAMPION (Dominique.LECAMPION@enst-bretagne.fr)
5May 1996
6
7
8This bsp is essentially based on the mvme136 bsp,
9and is only an extention of the MVME147 bsp. There
10are slight differences in the VMEchips used in the MVME147S and
11the MVME147 that should prevent the shmsupport and the startup
12code from running on a MVME147.
13
14Summary of the modifications that were made:
15
16 * include
17 
18   - bsp.h
19      Peripheral Channel Controller memory mapping
20      Z8530 memory mapping
21      VMEchip memory mapping
22 
23 * startup
24 
25   - bspstart.c
26      main () setup for VME roundrobin mode
27              setup for the PCC interrupt vector base
28              setup of the VME shared memory
29   - bspclean.c
30      bsp_cleanup () disable timer 1 & 2 interruptions
31   - linkcmds set the RAM start (0x7000) and size (4Meg - 0x7000)
32   - setvec.c unchanged
33   - sbrk.c unchanged
34 
35 * console
36 
37   - console.c taken from the dmv152 bsp (Zilog Z8530)
38               with no modification
39 
40 * clock
41 
42   - ckinit.c entirely rewritten for the PCC tick timer 2
43 
44 * timer
45 
46   - timerisr.s and timer.c
47     entirely rewritten for the PCC tick timer 1
48     now gives results un 6.25 us units (mininum timer delay,
49     suprising big grain)
50 
51 * times
52 
53   - updated results for the mvme147 (beware of the 6.25 us grain)
54
55 * shmsupp :
56   Specific to the S version of the MVME147
57   Only tested with 2 boards, in interrupt mode.
58   Uses the top 128k of the VME system controller board RAM
59   as the shared space.
60
61   - mpisr.c : uses the SIGLP interruption
62
63   - Makefile : unchanged
64
65   - getcfg.c : rewritten
66
67   - lock.c unchanged
68
69   - addrconv.c unchanged
70
71 * Makefiles
72   
73   - unchanged
74
75
76To be done:
77
78 * update the overheads in coverhead.h
79
80 * add support for serial ports 2,3 and 4.
81
82Other notes:
83
84 * All the timing tests and sp tests have been run except tmoverhd.
85   The test hangs during the pause (where the task should be suspended
86   until a return). Maybe the rtems_initialize_executive is no more
87   reentrant with this bsp.
88
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