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Fix func 0Bh (Get STDIN Status) always returns AL=FFh with some alternative CON drivers:

Browse Source 
* qwikansi.sys (simtelnet: simtelnet/msdos/screen/qwikansi.zip
* most of Japanese input methods (Microsoft MS-IME, ATOK, WXP/WX2/WX3)
This commit is contained in:
lpproj 2019-12-27 17:41:51 +09:00 committed by Kenneth J Davis
parent 9eb9b1a046
commit 19a6dc1ba4
1 changed files with 3 additions and 1 deletions
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4
kernel/chario.c
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@ -96,7 +96,9 @@ STATIC void CharCmd(struct dhdr FAR **pdev, unsigned command)
STATIC int Busy(struct dhdr FAR **pdev)
{
CharCmd(pdev, C_ISTAT);
CharCmd(pdev, C_NDREAD);
if (CharReqHdr.r_status & S_ERROR)
CharCmd(pdev, C_ISTAT);
return CharReqHdr.r_status & S_BUSY;
}