Thanks all, this is very interesting I can now complete my emulation of the cbm 4000/8000 screen on a propeller Btw: If someone is interested, I have a set of French eprom using the “commodore” keyboard (derived from the German Keyboard) Before the French keyboard was produced by Commodore we had our own set called internally as “Procep Keyboard” Eprom set for the French version of the commodore 8000 Edit : http://www.cbm8000.com/eproms/az-e-01-$e000.bin Charset: http://www.cbm8000.com/eproms/az-e-01-charset.bin Edex http://www.cbm8000.com/eproms/edex-4-3-$a000.bin (basic extension added to all commodore 8XXX sold in France -- didier De : email@example.com [mailto:firstname.lastname@example.org] De la part de A.Fachat Envoyé : jeudi 15 novembre 2012 06:32 À : email@example.com Objet : Re: commdore screen text / graphic mode You might look at my analysis of the pet crtc stuff here http:www.6502.org/users/andre/petindex/crtc.html There also is a more generic page on the crtc on my site. The number of rasterlines is indeed the register value mentioned plus 1. André Rob Clarke < <mailto:firstname.lastname@example.org> email@example.com> schrieb: I did a bit of analysis on this last year when I was working out the refresh rates on various CRTC PET's. I looked at all the edit roms on zimmers and put all the CRTC initialisation registers into a s/sheet. You can get it here: http://inchocks.co.uk/commodore/PET/PET_CRTC.xls THere's two rows for each ROM, being the initialisation registers for text and graphics modes respectively. As Martin said, it's usually 2 except for one alternate version of the 901474-04 rom which had only 1 extra scan line. Rob On 14/11/2012 23:11, firstname.lastname@example.org wrote: Hi, Apparently on the commodre 8000 the fo nt displayed is 8x8 but apparently some blank lines can be added in “text” mode Do you have any idea on the exact number ? The data in the register of the 6545 is 9 in text mode and 7 in graphic mode… Is there 1 or 2 blank lines ? I don’t remember very well…. Thanks -- Didier Message was sent through the cbm-hackers mailing list -- Diese Nachricht wurde von meinem Android-Mobiltelefon mit K-9 Mail gesendet. Message was sent through the cbm-hackers mailing listReceived on 2012-11-15 20:00:12
Archive generated by hypermail 2.2.0.