INT 15 - DESQview v2.20+ - GET ERROR HANDLING
AX = DE16h
Return: BL = 00h always post system error
01h return carry flag set on failed mailbox writes
02h return CF set on failed mailbox writes and NULL on failed
GETMEM calls

See also: 15DE15

15DE16 - DESQview v2.20+ - GET ERROR HANDLING