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Back to forum Reply to this topic Go to last reply Posted By register on 2009-06-15 04:54:13  Datasette calibration I am still playing with my new plus4. I am facing some problems with the datasette. I know for sure that the plus4 is fine since everything is working with an old datasette of mine. However the datasatte that came with the plus4 doesn't seem able to read any file. Since the datasette seems in efficient mechanical conditions ( it looks almost new ) I suppose that there is some problem with magnetic dirt or mechanical calibration. What should I do to check its functioning? Thanks to the forum, Reg Posted By TLC on 2009-06-15 05:09:19  Re: Datasette calibration You can do a first test by running the following routine (which comes from the old days ): monitor a0123 lda $01 adc #$38 sta $ff11 jmp $0123 g0123 then press play. You might want to do a cross-test with the good datassette first (so that you can hear how a perfect one should sound like). Listening to how the unit sounds (if it gives any signs of life, at all) will give you a first pointer on how/what should be repaired. Back to top Reply to this topic Copyright © Plus/4 World Team, 2001-2024