|
|
Atari coding BBS
| Re: Disabling 68030 PMMU + caches |
|---|
|
Posted by: ggn
|
Feb,07.2012-19:28
|
Here's what we've been using for ages and works pretty nice:
lea pmmu_table(PC),A0
lea TC_access+4(PC),A1
move.l A0,(A1) ; TC_access+4
move.l A0,8(A1) ; TT0_access+4
move.l A0,16(A1) ; TT1_access+4
moveq #0,D0
DC.L $4E7B0801 ; MOVEC D0,VBR Vektorbase=0 (eigentlich Standard)
TC_access DC.L $F0394000,$DEADF030 ; PMOVE pmmu_tab,TC
TT0_access DC.L $F0390800,$DEADF030 ; PMOVE pmmu_tab,TT0
TT1_access DC.L $F0390C00,$DEADF030 ; PMOVE pmmu_tab,TT1
...
pmmu_table INCBIN 'E49430.BIN' ; F030 StartUp(boot) PMMU Table
This actually sets the system's PMMU in another address (Falcon's standard is $700.w), we usually set it out of harm's way. Of course, to be extra nice to the system one needs to save the old tc/tt0/tt1 addresses and restore them upon program exit.
|
[All messages in this thread] [Start new thread]
|
Topic
|
Posted by
|
Date
|
|
Disabling 68030 PMMU + caches
|
Klaz
|
Feb,07.2012-10:55
|
|
Re: Disabling 68030 PMMU + caches
|
mikro
|
Feb,07.2012-17:52
|
|
Re: Disabling 68030 PMMU + caches
|
Klaz
|
Feb,07.2012-18:27
|
|
Re: Disabling 68030 PMMU + caches
|
ggn
|
Feb,07.2012-19:28
|
|
Re: Disabling 68030 PMMU + caches
|
Klaz
|
Feb,08.2012-09:35
|
|
Re: Disabling 68030 PMMU + caches
|
ggn
|
Feb,09.2012-19:22
|
|
Re: Disabling 68030 PMMU + caches
|
mikro
|
Feb,08.2012-12:08
|
|
Re: Disabling 68030 PMMU + caches
|
Klaz
|
Feb,08.2012-13:44
|
|
Re: Disabling 68030 PMMU + caches
|
mikro
|
Feb,08.2012-17:23
|
|
Re: Disabling 68030 PMMU + caches
|
Klaz
|
Feb,09.2012-09:17
|
|
Re: Disabling 68030 PMMU + caches
|
sqward
|
Feb,09.2012-16:01
|
|
Re: Disabling 68030 PMMU + caches
|
Klaz
|
Feb,09.2012-16:37
|
|
Re: Disabling 68030 PMMU + caches
|
mikro
|
Feb,10.2012-10:31
|
What's the anti-troll code?
That's your personal code to be able to add comments and messages on the dhs.nu site.
Don't have a code or forgot it? Fix it here.
|
