> For those of us who are unfamiliar with T87, is there some (short) > example document and the ASCII of the text contained? > > Graeme The drivers_info_t87 file supplied with it states that the sources for the printer drivers were not included on the disk for lack of space but were available on request from the author Fred Toussi. I'm not in contact with him now, but if anyone did go to the trouble of getting these from him, it might possibly help I suppose.
There is some information at the end of the above file: STRUCTURE OF PRINTER DRIVERS Each printer driver file consists of tables of numbers and strings and a small amount of machine code. The supplied files vary in size. The Assembly Language source code for the driver files is available separately from Software87. Some of the source code files are for more than one printer driver. Modifying the driver files requires the use of an assembler to re-assemble the modified source file. Modification can be very simple, as in the case of changing a number representing the pitch of a daisywheel, or more complex when a printer with a completely different standard is aimed at. With many Epson compatible dot-matrix printers, the width tables for proportionally spaced characters are different from those of the Epson printers for which there is a driver. This means that when proportional spacing is used within a line, that line may not justify correctly. The width tables within the printer driver should be modified for correct justification. The source listings are in the form of _T91 or _T87 documents. Extensive comments on the structure of the printer driver files can be found in the LX800 file. Once modifications have been made, driver files must be |Export|ed using the |Ascii| command to make them readable by assemblers. The SINCLAIR Macro Assembler or Assembler (written by GST) can be used for assembling the printer drivers. The Macro Assembler can be purchased from QUANTA. I have a working Text 87 (thanks to Marcel for the patch program) so could export the data to help anyone prepared to look into this if we can find these sources. As it is, I’ll privately send you some Text87 files to experiment with along with exported ascii text to compare. I’ve not looked at it myself, but I suspect that with all the options such as proportional spacing etc etc Text 87 has to handle it might be a very complex file format. Dilwyn ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2016.0.7640 / Virus Database: 4627/12565 - Release Date: 07/05/16 _______________________________________________ QL-Users Mailing List
