Changes
[[Category:Peripherals]] [[Category:Printers and printer ports]]
{{AmstradPrinterLinks}}
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Here are some Draft and NLQ charsets extracted from the EPROMs. In case of the DMP2000/DMP3000, additional Draft characters are probably contained in the CPUs on-chip ROM.
The red arrow indicates underlengths (where the 8bit data is shifted down to the lower 8-pins). The blue line indicates the pre-defined width for use in proportional mode.
<gallery>
File:DMP2000 Charset.png|DMP2000/DMP2160(incomplete)File:DMP3000 Charset.png|DMP3000(incomplete)File:DMP3160 Charset.png|DMP3160 (complete)File:NLQ401 Charset.png|NLQ401(complete)
</gallery>
* NLQ font: 103 characters, at EPROM offset 209Eh..3FFFh (pass1+pass2); ASCII characters
'''Encoding:''' 11 bytes per Draft character (same as Epson chars, but without prefix byte), 39 bytes per NLQ pass (in super-high horizontal resolution; about 3-4 times better than the later DMP2000..3000 models). In lack of prefix flags, underlengths are defined by software (at ROM address 090Eh..091Ch).<br>
'''Mechanical Restrictions:''' After drawing a draft pixel, the next ONE pixel (in the same row) must be white. After a NLQ pixel, the next THREE must be white.<br>'''Firmware Restrictions:''' Looking at the firmware disassembly, chr(7Fh..80h) (slashed zero and french "c") seem to be non-printable. chr(81h..FFh) are printable via ESC "=" code.
=== DMP2000/2160 fonts ===
* Draft font: probably somewhere in uPD7811 ROM (not dumped)
* NLQ font: 128 characters, at EPROM offset 3400h..39FFh (pass1) and 3A00h..3FFFh (pass2); ASCII characters
'''Encoding:''' 12 bytes per char (one prefix, plus eleven 8bit columns; the prefix contains underlength flag, and proportional char width info; same format as with [[Amstrad/Schneider Printer Control Codes|ESC "&" command]]), 2-pass NLQ characters are defined identically as two draft characters (the prefix byte is having the same value in both definitions)<br>
'''Mechanical Restrictions:''' After drawing a draft pixel, the next ONE pixel (in the same row) must be white. There is no such restriction for NLQ pixels (because they are defined in a lousy resolution).
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=== DMP3000 /DMP3160 fonts ===
== International Characters ==
|80h|| Ç || ü || é || â || ä || à || å || ç || ê || ë || è || ï || î || ì || Ä || Å
|-
|90h|| É || æ || Æ || ô || ö || ò || û || ù || ÿ || Ö || Ü ||ct.¢ || £ || ¥ || ptPt|| ƒ
|-
|A0h|| á || í || ó || ú || ñ || Ñ || ª || º || ¿ || xx|| ¬ || ½ || ¼ || ¡ || « || »
|E0h||alp|| ß || xx|| xx|| xx|| xx|| µ || xx|| xx|| xx|| xx|| xx|| xx|| xx|| xx|| xx
|-
|F0h||xx || ± || >=|| <=|| xx|| xx|| ÷ || xx|| ° || xx|| xx|| xxsqr|| ² ^n|| xx² || xx• ||
|-
|}
