Search results
Create the page "$1" on this wiki! See also the search results found.
- [[File:Model1GenesisVDP.jpg|333px|thumb|right|The VDP in a Model 1 [[Mega Drive|Mega Drive.]]The [[VRAM]] is visible near the bottom left, and ...m VDP is in turn derived from the Texas Instruments TMS9918A. In all Model 1 Mega Drives, the VDP is a dedicated large chip on the main motherboard, as62 KB (9,790 words) - 10:31, 30 April 2015
- ...middle, sound circuitry on the right, YM2612 on the lower right on a Model 1 [[Mega Drive|Mega Drive.]]]]9 KB (1,549 words) - 11:29, 16 March 2015
- [[File:Model1MegaDriveYM2612.jpg|350px|thumb|lright|The YM2612 in a Model 1 Mega Drive. The VDP is visible near the top right, as well as the [[Zilog Z ...In general, Part 1 contains global chip control and registers for channels 1-3, whereas part 2 contains registers for channels 4-6.12 KB (1,946 words) - 11:29, 16 March 2015
- Model 1 and Model 2 Mega Drives have an expansion port for the [[Sega CD]] peripher ===Model 1===9 KB (1,467 words) - 16:19, 16 March 2015
- ...ess in it for the text "SEGA" and then loads your game's code. Early Model 1 Mega Drives do not have a [[Trademark Security System|TMSS]] - but you stil RomEndLoc: dc.l EndOfRom-1 ; ROM end9 KB (1,562 words) - 10:40, 1 September 2017
- ...or TMSS, was a feature Sega added in later revisions of the [[Mega Drive]] 1 and all [[Mega Drive]] 2 and 3 models that is an attempt at locking out unl3 KB (569 words) - 11:29, 16 March 2015
- ...fference between '1' and the '2' in 'TMS9918A' and 'TMS9928A' is that the '1' version outputs composite NTSC video, while the '2' versions (including th * '''Mode 1 (Graphic 1):''' 32×24 characters. Each 8 characters in the character set has a foregr10 KB (1,652 words) - 11:29, 16 March 2015
- As the 32X is an add-on, it can only be used in conjunction with a Model 1 or Model 2 Mega Drive. it is plugged in where the cartridge bay is and cann8 KB (1,376 words) - 11:29, 16 March 2015
- ...from $00 (loudest) to $0F (quietest). Each byte represents one tick (i.e. 1/60th of a second), and looping is possible. The start of the loop is marked7 KB (1,170 words) - 11:29, 16 March 2015
- | Note on FM channel #1 | Note on PSG channel #110 KB (1,542 words) - 11:29, 16 March 2015
- | $A10003 || $A10003 || [[315-5309#Data_Register|Data]] 1 | $A10009 || $A10009 || [[315-5309#Control_Register|Control]] 16 KB (1,008 words) - 11:29, 16 March 2015
- ...1VRAM.jpg|200px|thumb|right|The two µPD41264 graphics memories on a Model 1 [[Mega Drive]]]]2 KB (351 words) - 11:29, 16 March 2015
- {{ConsoleInfo|maker=Sega|variants=Model 1 and 2, Multi-Mega (CDX)|name=Mega CD|processor=[[Motorola 68000]] at 12 MHz ...provides could be taken advantage of using either the cart boot mode (Mode 1) or the CD boot mode (Mode 2), allowing developers two methods to utilize t7 KB (1,124 words) - 11:29, 16 March 2015
- ! 1 ...ine to read the currently pressed buttons from all three IO ports (control 1&2, EXT)7 KB (1,070 words) - 11:29, 16 March 2015
- [[File:MDPSGExample.png|320px|thumb|right|A 1 kHz square wave under ideal conditions]] | text = A 1 kHz square wave.7 KB (1,018 words) - 11:29, 16 March 2015
- ...ndwidth using QPSK modulation. The downlink signal was at a frequency of 1.1 GHz and occupied 6 MHz bandwidth using QPSK. ...el adapter allowed the customer to download the game selected in less than 1 minute. The adapter contained 4 Megabytes of [[DRAM|DRAM,]] which held game2 KB (266 words) - 11:29, 16 March 2015
- moveq #1, d3 ; Bits to shift value by subq.w #1, d0 ; Subtract and see if we're done de-compressing.4 KB (701 words) - 11:29, 16 March 2015
- | Version= 1.54 ...eatures from Sonic 2 into the game, or feel that porting things from Sonic 1 is necessary, though lots of the features exist in game.11 KB (1,859 words) - 11:29, 16 March 2015
- | $000000 || -- || 1 MBit ROM (Main only) | $000000 || -- || 1 MBit ROM (Main only)4 KB (692 words) - 11:29, 16 March 2015
- * If d7 = 1, it jumps to $002000. lsr.w #1,d7 ; Restore Index.3 KB (494 words) - 11:29, 16 March 2015
