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Decrease size of shadow buffer for VGA. The old size is 2-fold excess of actual need.

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git-svn-id: svn://kolibrios.org@2398 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Marat Zakiyanov (Mario79) 2012-02-24 19:20:05 +00:00
parent 852732a9b1
commit e4aa2672b0
1 changed files with 6 additions and 2 deletions
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8
kernel/trunk/core/memory.inc
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@ -358,7 +358,9 @@ proc init_LFB
cmp dword [LFBAddress], -1
jne @f
mov [BOOT_VAR+0x901c], byte 2
stdcall alloc_pages, (0x280000 / 4096)
; max VGA=640*480*4=1228800 bytes
; + 32*640*4=81920 bytes for mouse pointer
stdcall alloc_pages, ((1228800+81920)/4096)
push eax
call alloc_page
@ -366,7 +368,9 @@ proc init_LFB
pop eax
or eax, PG_UW
mov ebx, LFB_BASE
mov ecx, 0x280000 / 4096
; max VGA=640*480*4=1228800 bytes
; + 32*640*4=81920 bytes for mouse pointer
mov ecx, (1228800+81920)/4096
call commit_pages
mov [LFBAddress], dword LFB_BASE
ret