On 10/11/2015 5:27 AM, Eric Auer wrote: > Hi Marlon, > >> Hi, I boot freedos (which is installed in a partition of the hard drive). >> I type debug, then I type d 40:8 >> >> The first line looks like this: > ... 0040:0000 [8 not displayed bytes] then ... > >> -78 03 00 00 00 00 C0 9E > This means that you have only one printer port: 378. > The other two ports are 0 (not installed) and after > that, you get data which is not related to printers. Well, not quite correct. The fourth pair of bytes here "can" be printers, but since the IBM AT, LPT4 is no longer a standard. > > So in short, on the actual hardware, there is only > one printer port and it already is LPT1 anyway :-) > As he mentioned he has a PCI add-on card, it "could" be that 9EC0 is the base port address of that PCI card, but without any info of that card, it is all a WAG. But otherwise, the BIOS (and in extension, the initialization routine of that add-on card) is not properly putting in any additional LPTx port address (it should be the second pair of bytes at that location). So here we end up having a basic hardware issue which is pretty tough to troubleshoot in a mailing list...
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