pert.dat

I originally wrote this for a Z80 back in the early 80s. I found the source code recently in one o

;This data was created using VAXC on a VAX 4000.
;At 60Mhz, it WAS king until the PC's caught up.
;I'll eventually upgrade to a 266Mhz ALPHA!
;
; Pre-transform bit swap lookup table for faster FFT
;
pert:	db	000h,080h,040h,0C0h,020h,0A0h,060h,0E0h
	db	010h,090h,050h,0D0h,030h,0B0h,070h,0F0h
	db	008h,088h,048h,0C8h,028h,0A8h,068h,0E8h
	db	018h,098h,058h,0D8h,038h,0B8h,078h,0F8h
	db	004h,084h,044h,0C4h,024h,0A4h,064h,0E4h
	db	014h,094h,054h,0D4h,034h,0B4h,074h,0F4h
	db	00Ch,08Ch,04Ch,0CCh,02Ch,0ACh,06Ch,0ECh
	db	01Ch,09Ch,05Ch,0DCh,03Ch,0BCh,07Ch,0FCh
	db	002h,082h,042h,0C2h,022h,0A2h,062h,0E2h
	db	012h,092h,052h,0D2h,032h,0B2h,072h,0F2h
	db	00Ah,08Ah,04Ah,0CAh,02Ah,0AAh,06Ah,0EAh
	db	01Ah,09Ah,05Ah,0DAh,03Ah,0BAh,07Ah,0FAh
	db	006h,086h,046h,0C6h,026h,0A6h,066h,0E6h
	db	016h,096h,056h,0D6h,036h,0B6h,076h,0F6h
	db	00Eh,08Eh,04Eh,0CEh,02Eh,0AEh,06Eh,0EEh
	db	01Eh,09Eh,05Eh,0DEh,03Eh,0BEh,07Eh,0FEh
	db	001h,081h,041h,0C1h,021h,0A1h,061h,0E1h
	db	011h,091h,051h,0D1h,031h,0B1h,071h,0F1h
	db	009h,089h,049h,0C9h,029h,0A9h,069h,0E9h
	db	019h,099h,059h,0D9h,039h,0B9h,079h,0F9h
	db	005h,085h,045h,0C5h,025h,0A5h,065h,0E5h
	db	015h,095h,055h,0D5h,035h,0B5h,075h,0F5h
	db	00Dh,08Dh,04Dh,0CDh,02Dh,0ADh,06Dh,0EDh
	db	01Dh,09Dh,05Dh,0DDh,03Dh,0BDh,07Dh,0FDh
	db	003h,083h,043h,0C3h,023h,0A3h,063h,0E3h
	db	013h,093h,053h,0D3h,033h,0B3h,073h,0F3h
	db	00Bh,08Bh,04Bh,0CBh,02Bh,0ABh,06Bh,0EBh
	db	01Bh,09Bh,05Bh,0DBh,03Bh,0BBh,07Bh,0FBh
	db	007h,087h,047h,0C7h,027h,0A7h,067h,0E7h
	db	017h,097h,057h,0D7h,037h,0B7h,077h,0F7h
	db	00Fh,08Fh,04Fh,0CFh,02Fh,0AFh,06Fh,0EFh
	db	01Fh,09Fh,05Fh,0DFh,03Fh,0BFh,07Fh,0FFh