Hello, On Wed, 4 Jan 2023 at 01:52, Jim Hall <jh...@freedos.org> wrote:
> >> a) printer.htm (printer.sys) (in htmlhelp): > >> > >> According to help 1.0.5 this version was made by Aitor > >> SANTAMARIA MERINO with copyright 2003. I overtook it from > >> Rob Plat "as is". I did not find the files at Ibiblio. > >> Question: Is it still in use - and where can I find it? Or > >> can I forget it? > PRINTER.SYS (or PRINTER.COM) would be a totally different project from printer queues, etc. that is being discussed here. PRINTER.SYS would be to PRN (LPT1) what DISPLAY.SYS is to CON: it would provide the PRN device with IOCTL functions, that is, codepage management functions, by means of using printer-specific commands sent to the printer, and eventually, even sending full codepage information to a printer. This is useful for when a codepage change command is issued: CHCP 850 Kernek would issue the ioctl calls to all devices and no device is left inconsistent (unlike what happens with the MODE CON CP SELECT= call). Making this requires two things: (1) Printer model specific commands for codepage management inside PRINTER.SYS/COM (the same way that DISPLAY has CGA, EGA and VGA specific functions): DISPLAY CON=(EGA,....) would be PRINTER PRN=(my_printer,...) (2) codepage specific data files, that contain bulk codepage information to be sent to the printer by means of MODE: MODE CON CODEPAGE PREPARE=((850) EGA.CPX) would be MODE PRN CODEPAGE PREPARE=((850) codepage_information_file) Regrettably, I don't have any of the codepage information files, or their format so that MODE can bulk send them to PRINTER.SYS. And second, very long long time ago I was sent SOME information about PCL printers, but this project is not very appealing to me, as I assume there are not many FreeDOS users that would find this useful. So although DISPLAY sources could be slightly adapted to produce a PRINTER.SYS/COM, there is no PRINTER that I know of. Aitor
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