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Topic: MC6845

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	Enhanced Graphics Adapter - Wikipedia, the free encyclopedia
		Introduced in 1984 by IBM for its new PC-AT, EGA produced a display of 16 colors at a resolution of up to 640×350 pixels.
		The EGA card included a 16 kilobyte ROM to extend the system BIOS for additional graphics functions and included the Motorola MC6845 video address generator.
		Each of the 16 colours could be assigned a unique RGB colour code via a palette mechanism in the 640×350 high-resolution mode; EGA let you choose the displayed colours out of a total of 64 palette colours (two bits per pixel for red, green and blue).
	en.wikipedia.org /wiki/Enhanced_Graphics_Adapter (417 words)

	Cga quickbooks pro Cga
		It was based around the Motorola MC6845 display controller and had a palette of 16 colors.
		The MC6845 as used in the Amstrad CPC
		The Amstrad CPC series of 8-bit computers also used the MC6845 and so had a similar set of graphics modes to CGA but with more palette flexibility: 27 colors, of which any combination could be used in every graphic mode avaiable limited only by the available bit depth.
	www.find-ask.com /Encyclopedia/Cga/Cga.html (1922 words)

	[Coco] [Color Computer] WordPak RS/CO80 (Site not responding. Last check: 2007-11-03)
		Boisy try this webpage http://www.6502.org/users/andre/petindex/crtctest/internals/diffs.html There is some minor differences between the MC6845, MC6845-1 and the Rockwell 6545 and 6545-1 parts.
		One major difference between the MC6845 and the Rockwell 6545 is bit #3 of R8.
		Setting this bit to "1" will allow the CPU to access the video ram by writing to the write only registers R18 and R19.
	five.pairlist.net /pipermail/coco/2005-January/011816.html (190 words)

	The picoTK HOWTO: The Framebuffer (Site not responding. Last check: 2007-11-03)
		Historically the controller for getting the data out of the framebuffer and feeding the display is called a cathode ray tube controller (CRTC).
		[On the first IBM PCs this has been done using a Motorola MC6845 chip (back then, this chip has been used widely for other display applications as well).
		The organization of the framebuffer, that is how the picture information is stored in the memory and accessed by the host CPU depends on the implementation and programming of the CRTC.
	picotk.sourceforge.net /HOWTO-2.html (345 words)

	Graphics chips
		(MC6847) The MC6845 is a video address generator first introduced by Motorola and used in the TRS-80 Color Computer among others.
		The VIC-II (Video Interface Chip II), specifically known as the MOS Technology 6567/8562/8564 (NTSC versions), 6569/8565/8566 (PAL), is the integrated circuit chip tasked with generating Y/C/ composite video graphics and DRAM refresh signals in the Commodore 64 and C128 home computers.
		The Motorola 6845 (commonly MC6845) is a video address generator first introduced by Motorola and used in the CGA and EGA video adapters, Amstrad CPC and BBC Micro.
	www.shortopedia.com /G/R/Graphics_chips (1166 words)

	PC1512 display notes
		Unlike a real CGA, it is not built around a real MC6845 controller, and so attempts to get custom video modes out of it may not work as expected.
		Its 640x200 CGA mode can be set up to be a 16-colour mode rather than mono.
		This is a write-only port which is used to set the border colour in the 640x200 graphics mode.
	www.seasip.info /AmstradXT/pc1512disp.html (485 words)

	MC6845 buy\|sell MC6845 Electronic Component. ICELECT components distributor 954-344-6888 (Site not responding. Last check: 2007-11-03)
		MC6845 Prefix:M MC6845 Other Manufacturers of this part include: Searches: M C6845 M-C6845 M.C6845 Datasheet: MC6845 M C6845 Picture : MC6845 M C6845
		With 24 hour quote response and the ability to ship MC6845 and over 90 percent of our orders the SAME day we are positioned to serve you.
		We sell electronic components with a focus on signal processing, analog, mixed signal, amplifiers, power management, MCU 2000, controler's, Low and high power, AC, DC, converts, logic and micro-controlers.
	www.icpowerx.com /focusparts/MC6845.HTML (176 words)

	CRT controller
		You can use the MC6845 crt controller from Motorola.
		The part is obsolete now, but I'm shore that you can find a few pcs (if you don't need higher quantities).
		I have got the 640x480 colour LCD pannel (SHARP LM64C081) and initially wanted to controll it using the MC6845 controller with some glue from the XC9572XL CPLD.
	www.edaboard.com /ftopic60329.html (1321 words)

	MC6845 compatible CRTC
		-- -- -- -- VHDL model of MC6845 compatible CRTC -- -- -- -- This model doesn't implement interlace mode.
		Everything else is -- -- (probably) according to original MC6845 data sheet (except VTOTADJ).
		-- Interconnect signals (as in MC6845 datasheet) --pragma translate_off signal Hend: STD_LOGIC; signal HS: STD_LOGIC; signal CHROW_CLK: STD_LOGIC; signal Vend: STD_LOGIC; signal SLadj: STD_LOGIC; signal H: STD_LOGIC; signal V: STD_LOGIC; signal CURSOR_ACTIVE: STD_LOGIC; signal VERT_RST: STD_LOGIC; --pragma translate_on
	www.howell1964.freeserve.co.uk /logic/vhdl_6845/crtc6845_vhd.htm (535 words)

	[No title] (Site not responding. Last check: 2007-11-03)
		Usually the functions that this chip provides are implemented in discreet logic.
		I was not able to find any information on this chip, but the pinouts match a MC6845 so I am assuming it is the same chip.
		The CRT controller is responsible for generating all the display timing and the addresses that are used to read the video memory.
	www.atarihq.com /danb/files/zarzon.txt (5200 words)

	SDOS resource page
		The functionality of this chip is included in most modern chipsets.
		This is the actual Motorola data sheet on the MC6845 video controller.
		This is the chip on which all later video controller chips are based, so all basic functions are described here.
	www.tavi.co.uk /sdos (685 words)

	Peripheral emulation apparatus - Patent 4875186
		The inventive technique may also be used with other types of peripheral controllers.
		Illustratively, a Model MC6845 video display controller manufactured by Motorola Incorporated, Semiconductor products Division, located at Phoenix, Ariz. is shown.
		Device 102 has eighteen internal registers which can be programmed to produce various effects on the associated display monitor (not shown).
	www.freepatentsonline.com /4875186.html (5613 words)

	CS/A65 and Gecko computers
		For non-commercial purposes the terms of the GNU public license apply.
		The video board has 64kByte of dynamic RAM, and a R6545 or MC6845 CRTC video controller to display 40 or 80 cols (depending on system speed) with 25 lines on a TV set.
		The 6545 I/O location is the same as in the PET, and information on the chip can be found on funet.
	www.6502.org /users/andre/csa (1940 words)

	CAST& Digital Blocks Announce C6845 Core
		POMONA, NEW YORK -- June 8, 1998 -- Intellectual property (IP) provider CAST, Inc. and development partner Digital Blocks today announce a new synthesizable VHDL CAST core: the C6845 CRT Controller for raster-scan CRT displays.
		This fully synchronous VHDL core is compatible with Motorola's MC6845 CRT Controller.
		For embedded system designers with character and bit-mapped graphics CRT display requirements, the C6845 offers improved product time-to-market, lower product development costs, and reduced risk.
	www.cast-inc.com /info/pr/news/pre2000/060898_c6845.shtml (369 words)

	[No title] (Site not responding. Last check: 2007-11-03)
		IBM Color Graphics Adapter (CGA) The original CGA was built with discrete logic around an MC6845 display controller.
		On the original CGA and some clones accessing the video memory during the active display time caused the display controller to miss some pixels (seen as "snow"), which is the reason many programs only accesses video memory during vertical or horizontal retrace.
		Note: this register is only accessible if 3D4h index D8h bit 5 is set.
	thorkildsen.no /faqsys/docs/cga.txt (1984 words)

	[No title] (Site not responding. Last check: 2007-11-03)
		This capability greatly simplifies and accelerates the bit operations required in graphics processing and” (Page 2.2-6, Motorola Semiconductor Master Selection Guide, 1996 edition) This passage shows what the part is good for, video games.
		Coupled with an MC6845 CRT controller and an MC6821 Peripheral Interface Adapter, this part is just asking to be put into an arcade machine.
		Datasheet city, datasheet city, datasheet city: (say that three times fast) The other nifty tid-bit is the datasheet I found on-line (Part Miner once again).
	emustatus.rainemu.com /wtc/capambrief.doc (2207 words)

	OT- Producing a video signal
		There are many turn key solutions depending on your answers to the
		The brute force way is the ancient MC6845 CRT controller (as used on
		The MC6845 they used is well documented and easy to
	www.embeddedrelated.com /groups/68hc12/show/8570.php (4885 words)

	[No title]
		It is purely for educational purposes; we learn using a lot of new techiques like 'in circuit programming' (we have a Lattice ispEXPERT kit license), 'BDM' with GNU GDB and P&E Micro PROGCF and multilayer PCB design.
		From where we come, the 68xx and 68xxx world, we used to deploy MC6821 / MC6850 / MC6845 / MC68230 / MC68901 a lot.
		Now these devices are getting harder and harder to get, we got the wierd (?) idea to use programmable devices for ALL I/O functions.
	www.wildrice.com /ColdFire/Arc/1999/06/ColdFire19990602.tarc (1208 words)

	SOCcentral: Cathode Ray Tube Controller (Xilinx, Inc. 3094) (Site not responding. Last check: 2007-11-03)
		The AllianceCORE C6845 Cathode Ray Tube Controller (CRTC) interfaces a microprocessor to a raster-scan CRT display.
		The C6845 is a synchronous, core, functionally equivalent to the Motorola MC6845 CRT Controller.
		Go directly to the Xilinx, Inc. website for the PDF datasheet on this product.
	www.soccentral.com /results.asp?entryID=3094 (117 words)

	[No title]
		Amstrad used CRTC (Cathodic Ray Tube Controller) from different manufacturers, which worked the same in the main, but do have many different characteristics.
		This is the reason why a demo designed for CRTC type 1, may not display correctly (or even at all), on a CRTC type 0 : - CRTC 0 : chipset HD6845S, - CRTC 1 : chipset UM6845R, - CRTC 2 : chipset MC6845, - CRTC 3 : CPC+ Asic, - CRTC 4 : ?
		The KC compact (KC mean KleinComputer = little computer) is a clone of the Amstrad CPC.
	www.cise.ufl.edu /mirrors/internet-FAQs/comp.sys.amstrad.8bit/comp.sys.amstrad.8bit_FAQ_v1.29_1_3 (3139 words)

	Hardware Basics
		The IBM MDA board also carries a parallel printer port, so that no other slots are consumed to interface to the printer.
		The board is based around the Motorola MC6845 CRT (Cathode Ray Tube) Controller integrated circuit, and the functionality of this chip in fact forms the basis for later designs because of compatibility requirements.
		The attached figure shows a block diagram of the MDA.
	www.lesbell.com.au /Home.nsf/e13d28c7fa3133464a2569250040c56b/9be0be397da1ffdb4a2569250041e428?OpenDocument (17536 words)

	FPGA FAQ comp.arch.fpga archives - messages from 10475
		I try to implement on my 80186 based board simple video interface.
		I try with mc6845 core but I need more than 16 colors 320x200.
		Subject: -SEE SNEAK LOCKER ROOM PIX OF GYMNASTS FREE 95695
	www.fpga-faq.org /archives/10475.html (4325 words)

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