Re: Data Becker CBM-8000 hi-res graphics

No, the HSG (High Speed Graphik) is a Commodore Germany made board using a special Thomson GPU chip. It has 32K of dedicated RAM and supports plotting,  line drawing, and text scaling in hardware. It has a ROM that adds graphics keywords to BASIC. The PET video is fed into this board but only as a switcher between graphics or text. It cannot overlay the two. It also has a separate graphics output connector.
 Commodore also had a special board for 8296 machines called the "HRE" (Hi-Res Emulator) that used the same commands as the HRG but did all the drawing via software. 
The SuperSoft board that I'm reversing has 8K Graphics RAM at $9000-AFFF and ROM code that resides in the upper editor rom space with commands via SYS hr,{command,parameters..}. The Supersoft connects to the CRTC chip with a ribbon cable and mounts on the character ROM and Editor ROM sockets. The Character ROM socket is used for mixing PET and graphics on one screen.
The Data Becker board is interesting as ROM appears in the $9000-9FFF area. So where is the graphics RAM? Perhaps it's bank-switched into the $A000-AFFF area? Or, the 6545 CRTC does have the ability to access dedicated video ram that is not accessable to the CPU. Perhaps it does something like that?
Steve

      From: Raj Wurttemberg <rajaw@c64.us>
 To: cbm-hackers@musoftware.de 
 Sent: Monday, August 28, 2017 2:12 PM
 Subject: RE: Data Becker CBM-8000 hi-res graphics
   
Is this the board you guys are looking at?

http://www.6502.org/users/sjgray/computer/hsg/index.html

Thanks,
/Raj


-----Original Message-----
From: owner-cbm-hackers@musoftware.de
[mailto:owner-cbm-hackers@musoftware.de] On Behalf Of vossi
Sent: Monday, August 28, 2017 1:50 AM
To: cbm-hackers@musoftware.de
Subject: Data Becker CBM-8000 hi-res graphics

Hi,
I just got a 8032SK with a Data Becker graphics extension board.
The Board plugs in the 6545 socket and has a flatcable to the
char-rom-socket.
In the board plugs the 6545 and the char-rom.
Above the board plugs a second board with 16kB ram (8x6116).
In the 8032 is an eprom for this graphics-extension.

I read that it starts with sys36864 and say:
CBM-8000 hi-res graphics software data becker gmbh Created 18.09.1981 by
m.thielker graphics ready

With 16kB and the 6545 it should display 640x200 monochrome graphics.
But how to use???

Has anybody informations, manual, schematics  for it?
please send to: vossi@ceffy.de

greets
Christian



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