You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
69 lines
1.7 KiB
69 lines
1.7 KiB
;----------------------------Module-Header------------------------------;
|
|
; Module Name: GENDATA.BLT
|
|
;
|
|
; Data definitions for BitBLT.
|
|
;
|
|
; Created: In Windows' distant past (c. 1983)
|
|
;
|
|
; Copyright (c) 1983 - 1987 Microsoft Corporation
|
|
;
|
|
; This file is a catchall for data definitions other that code templates
|
|
; for BitBLT.
|
|
;
|
|
; This file is part of a set that makes up the Windows BitBLT function
|
|
; at driver-level.
|
|
; 03/06/92 dstseng change bitmask_tbl1/bitmask_tbl2 to private
|
|
;-----------------------------------------------------------------------;
|
|
|
|
; The following two bitmask tables are used for fetching
|
|
; the first and last byte used-bits bitmask.
|
|
|
|
|
|
; public bitmask_tbl1
|
|
; public _bitmask_tbl1
|
|
bitmask_tbl1 label byte
|
|
_bitmask_tbl1 label byte
|
|
db 11111111b ;Masks for leftmost byte
|
|
db 01111111b
|
|
db 00111111b
|
|
db 00011111b
|
|
db 00001111b
|
|
db 00000111b
|
|
db 00000011b
|
|
db 00000001b
|
|
|
|
|
|
; public bitmask_tbl2
|
|
; public _bitmask_tbl2
|
|
bitmask_tbl2 label byte
|
|
_bitmask_tbl2 label byte
|
|
db 10000000b ;Masks for rightmost byte
|
|
db 11000000b
|
|
db 11100000b
|
|
db 11110000b
|
|
db 11111000b
|
|
db 11111100b
|
|
db 11111110b
|
|
db 11111111b
|
|
|
|
|
|
|
|
; phase_tbl1 is used for loading the "used" bits and "saved" bits
|
|
; bitmasks for cases 1,2,3 where the step direction is left to
|
|
; right. If it weren't for the case of zero, this could be done
|
|
; with a simple rotate of 00FF. For cases 4,5,6, a simple rotate
|
|
; can create the mask needed.
|
|
|
|
|
|
; public phase_tbl1
|
|
phase_tbl1 label word
|
|
db 11111111b,00000000b ;Used bits, saved bits
|
|
db 00000001b,11111110b
|
|
db 00000011b,11111100b
|
|
db 00000111b,11111000b
|
|
db 00001111b,11110000b
|
|
db 00011111b,11100000b
|
|
db 00111111b,11000000b
|
|
db 01111111b,10000000b
|
|
|
|
|