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Added support for BUFFERSHIGH as alias to BUFFERS: No new code

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but useful for people who are used to writing HIGH everywhere.
Thanks to Christian Wallbaum the hint that config.txt had both.
Removed code which called int 16.1 in a loop before 16.0 - this
would only be useful if you invoke HLT before each int 16.1 ...


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@1366 6ac86273-5f31-0410-b378-82cca8765d1b
This commit is contained in:
Eric Auer 2008-06-01 22:44:19 +00:00
parent 74167734ff
commit 31bc1f6149
2 changed files with 15 additions and 1 deletions
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4
docs/config.txt
View File

@ -45,7 +45,9 @@ space will be used for further buffers until something else allocates
the HMA space for something else. Even then, at least nn buffers will
always be available. You can set nn to a negative value to disable
the use of unused HMA space: BUFFERS=-10 only uses 10 buffers, further
free space in the HMA will just stay unused.
free space in the HMA will just stay unused. Because the buffers can
use the HMA anyway, BUFFERSHIGH does the same as BUFFERS for now, but
shows a note about that to inform the user that it does not use UMB.
Example: buffers=20
COUNTRY

12
kernel/config.c
View File

@ -172,6 +172,7 @@ UCOUNT Menus BSS_INIT(0);
STATIC VOID CfgMenuColor(BYTE * pLine);
STATIC VOID Config_Buffers(BYTE * pLine);
STATIC VOID CfgBuffersHigh(BYTE * pLine);
STATIC VOID sysScreenMode(BYTE * pLine);
STATIC VOID sysVersion(BYTE * pLine);
STATIC VOID CfgBreak(BYTE * pLine);
@ -271,6 +272,7 @@ STATIC struct table commands[] = {
{"BREAK", 1, CfgBreak},
{"BUFFERS", 1, Config_Buffers},
{"BUFFERSHIGH", 1, CfgBuffersHigh}, /* as BUFFERS - we use HMA anyway */
{"COMMAND", 1, InitPgm},
{"COUNTRY", 1, Country},
{"DOS", 1, Dosmem},
@ -757,6 +759,7 @@ UWORD GetBiosKey(int timeout)
{
do
{
/* optionally HLT here - timer will IRQ even if no keypress */
r.a.x = 0x0100; /* are there keys available ? */
init_call_intr(0x16, &r);
if (!(r.flags & FLG_ZERO)) {
@ -769,10 +772,13 @@ UWORD GetBiosKey(int timeout)
}
/* blocking wait (timeout < 0): fetch it */
#if 0
do {
/* optionally HLT here */
r.a.x = 0x0100;
init_call_intr(0x16, &r);
} while (r.flags & FLG_ZERO);
#endif
r.a.x = 0x0000;
init_call_intr(0x16, &r);
return r.a.x;
@ -918,6 +924,12 @@ STATIC void Config_Buffers(BYTE * pLine)
Config.cfgBuffers = nBuffers;
}
STATIC void CfgBuffersHigh(BYTE * pLine)
{
Config_Buffers(pLine);
printf("Note: BUFFERS will be in HMA or low RAM, not in UMB\n");
}
/**
Set screen mode - rewritten to use init_call_intr() by RE / ICD
*/