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|    alt.os.development    |    Operating system development chatter    |    4,255 messages    |
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|    Message 2,994 of 4,255    |
|    wolfgang kern to muta...@gmail.com    |
|    Re: hardware abstraction    |
|    13 Dec 21 15:20:52    |
      From: nowhere@nevernet.at              On 12/12/2021 21:58, muta...@gmail.com wrote:       > On Monday, December 13, 2021 at 3:48:42 AM UTC+11, wolfgang kern wrote:       >       >> interesting, but I don't see any RS232 connector on my 12 PCs.       >       > That's the exact problem. They took away the physical       > connector without updating the firmware to redirect it       > to something else (USB/Bluetooth/Wifi).       >       > They did allow hard disks to be redirected to the USB port.       >       > Anyway, I'm pretty sure you can buy PCs with a serial port,       > which is the donkey solution I will probably have to resort       > to if no BIOS manufacturer does this internally.       >       >>> But surely the proper solution is to put not just this but       >>> also the printer into the BIOS and abstract the hardware?       >       >> while some printers may work wireless, which brand and type would you       >> insert into your BIOS ?       >       > I seem to be missing something (Grant asked something       > similar). When you do an fopen of PRN, there is no data       > sent to the printer, it's just a raw connection. That's all I       > expect the BIOS to do. You still need some sort of driver       > to send the right format of data via the PRN connection.              with PRN you probably mean LPT...       there once were a BIOS function for this old standard,       IIRC it was INT_0x14. But all OS including early DOS used the hardware       direct because in old days LPT- and COM-ports were PC/XT&AT standards.       meanwhile serial and parallel connectors disappeared almost completely.       __       wolfgang              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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