Category : Files from Magazines
Archive : ISSUE-38.ZIP
Filename : KAYPRO38.FIG
Output of file : KAYPRO38.FIG contained in archive : ISSUE-38.ZIP
;Kaypro Column Figure 2
;Figure 2 - Undocumented Z80 Codes
;****************************************
; T3.ASM
;TEST OF UNDOC. Z80 CODES SPEED.
;****************************************
ORG 100H
START:
LD E,0FFH
LD C,6
CALL 5
OR A
JP Z,START ;WAIT FOR KEYPRESS
CALL SHOWX
DB 0DDH ;SET UP OUTER LOOP
LD H,0FFH
OUTLP:
DB 0FDH ;SET UP MIDDLE LOOP
LD H,0FFH
MIDLP:
DB 0FDH ;SET UP INNER LOOP
LD L,0FFH
INLP:
DB 0FDH
DEC L
JP NZ,INLP
DB 0FDH
DEC H
JP NZ,MIDLP
DB 0DDH
DEC H
JP NZ,OUTLP
CALL SHOWX
RET
SHOWX: LD E,7 ;BELL
CALL CONOUT
LD E,`X'
CONOUT: LD C,6
CALL 5
RET
;*****************************************
END ;OF T3.ASM
;*****************************************
Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!
This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.
But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/