Hi Ruud, I’m very busy at the moment… In my 8032sk was the „Grafik Walter“ Eprom with the machine routines at $9000, 9003, 9006 and so on… I found out how to clear, reverse the screen and how to print dots to the screen via the 3 registers. From Christian Diercks I got the original DataBecker Rom (Thielker) with the Basic extension. I disassembled this rom in the monitor ans found out that all statements begin with ‚!‘. Also I saw the table with the basic statements and tried how the pass the parameters. Now I can use: !dot, !cdot, !draw,!line, !cline, !gclear, !graphics, !move The 86s were activated by pin 9 (Q3) of the right 74ls273 latch – this is the latch for the higher address lines. Only 6 higher address lines were used to address the 16kB ram. The input for the Latch is pin 8 (D3) and that's the bit #6 (0x40) from the databus. You have to write 0x40 to the address high byte to activate reverse picture. -- Mit freundlichen Grüßen With kind regards Met vriendelijke groet Christian Forstreuter -- Sent from: http://cbm-hackers.2304266.n4.nabble.com/ Message was sent through the cbm-hackers mailing listReceived on 2017-10-13 14:54:22
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