Computer acronyms - Revision history

>Wongck at 14:49, 8 April 2012

2012-04-08T14:49:07Z

← Older revision		Revision as of 10:49, 8 April 2012
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	===ST-RAM===		===ST-RAM===
	The ST and TT both have main memory (ST memory), shared evenly between video and the CPU. This sharing cuts down machine performance -there are times the CPU could use memory that video has. In the ST, the 68000 microprocessor very often hit memory just as its "time slot" opened up, so there wasn't much speed degradation; the TT has a much faster 68030, hitting memory much more often, and is thus more likely to be slowed down.		AKA SlowRAM. The ST and TT both have main memory (ST memory), shared evenly between video and the CPU. This sharing cuts down machine performance -there are times the CPU could use memory that video has. In the ST, the 68000 microprocessor very often hit memory just as its "time slot" opened up, so there wasn't much speed degradation; the TT has a much faster 68030, hitting memory much more often, and is thus more likely to be slowed down.

	===TT-RAM===		===TT-RAM===
	~~===FastRAM===~~		AKA fastRAM. This memory has nothing to do with video; for instance, you can't have a video image in TT memory and display it. This opens up TT-RAM to full-throttle access from the 68030; it about doubles the speed of programs running within it. This memory is also 32-bits wide, so everytime the 68030 hits it, it gets four bytes (eight bits each).
	This memory has nothing to do with video; for instance, you can't have a video image in TT memory and display it. This opens up TT-RAM to full-throttle access from the 68030; it about doubles the speed of programs running within it. This memory is also 32-bits wide, so everytime the 68030 hits it, it gets four bytes (eight bits each).

	==Video sync==		==Video sync==

>Wongck: /* Memory */

2012-04-08T14:48:16Z

Memory

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	===MMU===		===MMU===
	'''''M'''emory '''M'''anagement '''U'''nit'' is the hardware component that manages the computer memory. Typically, the MMU is part of the CPU, though in some designs it is a separate chip. Wiki [http://en.wikipedia.org/wiki/Memory_management entry]		'''''M'''emory '''M'''anagement '''U'''nit'' is the hardware component that manages the computer memory. Typically, the MMU is part of the CPU, though in some designs it is a separate chip. Wiki [http://en.wikipedia.org/wiki/Memory_management entry]

			===ST-RAM===
			The ST and TT both have main memory (ST memory), shared evenly between video and the CPU. This sharing cuts down machine performance -there are times the CPU could use memory that video has. In the ST, the 68000 microprocessor very often hit memory just as its "time slot" opened up, so there wasn't much speed degradation; the TT has a much faster 68030, hitting memory much more often, and is thus more likely to be slowed down.

			===TT-RAM===
			===FastRAM===
			This memory has nothing to do with video; for instance, you can't have a video image in TT memory and display it. This opens up TT-RAM to full-throttle access from the 68030; it about doubles the speed of programs running within it. This memory is also 32-bits wide, so everytime the 68030 hits it, it gets four bytes (eight bits each).

	==Video sync==		==Video sync==

>Wongck at 15:01, 7 April 2012

2012-04-07T15:01:20Z

← Older revision		Revision as of 11:01, 7 April 2012
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			==General==
	===EULA===		===EULA===
	'''''E'''nd '''U'''ser '''L'''icense '''A'''greement'' - The legal agreement between the manufacturer and purchaser of software. It is either printed somewhere on the packaging or displayed on screen at time of installation, the latter being the better method, because it cannot be avoided. The user must click "Accept" or "I Agree" and the license does stipulate the terms of usage, whether the user reads them or not. Wiki [en.wikipedia.org/wiki/Software_license_agreement entry].		'''''E'''nd '''U'''ser '''L'''icense '''A'''greement'' - The legal agreement between the manufacturer and purchaser of software. It is either printed somewhere on the packaging or displayed on screen at time of installation, the latter being the better method, because it cannot be avoided. The user must click "Accept" or "I Agree" and the license does stipulate the terms of usage, whether the user reads them or not. Wiki [en.wikipedia.org/wiki/Software_license_agreement entry].

			==Logic==
			===CPDL===
			A '''''C'''''omplex '''''P'''''rogrammable '''''L'''''ogic '''''D'''''evice (CPLD) is a programmable logic device with complexity between that of PALs and FPGAs, and architectural features of both. Wiki [http://en.wikipedia.org/wiki/Complex_programmable_logic_device Entry].

			==Memory==
			===ROM===
			'''''R'''ead-'''O'''nly '''M'''emory'' is computer memory on which data has been prerecorded. Once data has been written onto a ROM chip, it cannot be removed and can only be read hence read-only memory. Wiki [http://en.wikipedia.org/wiki/Read-only_memory entry]

			===RAM===
			'''''R'''andom '''A'''ccess '''M'''emory'' is a type of computer memory that can be accessed randomly; that is, any byte of memory can be accessed without touching the preceding bytes. RAM is the most common type of memory found in computers and other devices, such as printers. Wiki [http://en.wikipedia.org/wiki/Random-access_memory entry].

	===SIMM===		===SIMM===
	'''''S'''ingle '''I'''n-line '''M'''emory '''M'''odule'', is a type of memory module containing random access memory used in computers from the early 1980s to the late 1990s. Wiki [http://en.wikipedia.org/wiki/SIMM entry].		'''''S'''ingle '''I'''n-line '''M'''emory '''M'''odule'', is a type of memory module containing random access memory used in computers from the early 1980s to the late 1990s. Wiki [http://en.wikipedia.org/wiki/SIMM entry].

			===SDRAM===
			'''''S'''''ynchronous '''''D'''''ynamic '''''R'''''andom '''''A'''''ccess '''''M'''''emory (SDRAM) is dynamic random access memory (DRAM) that is synchronized with the system bus. Classic DRAM has an asynchronous interface, which means that it responds as quickly as possible to changes in control inputs. SDRAM has a synchronous interface, meaning that it waits for a clock signal before responding to control inputs and is therefore synchronized with the computer's system bus. The clock is used to drive an internal finite state machine that pipelines incoming commands. This allows the chip to have a more complex pattern of operation than an asynchronous DRAM, enabling higher speeds. Wiki [http://en.wikipedia.org/wiki/Synchronous_dynamic_random-access_memory Entry].

	===MMU===		===MMU===
	'''''M'''emory '''M'''anagement '''U'''nit'' is the hardware component that manages the computer memory. Typically, the MMU is part of the CPU, though in some designs it is a separate chip. Wiki [http://en.wikipedia.org/wiki/Memory_management entry]		'''''M'''emory '''M'''anagement '''U'''nit'' is the hardware component that manages the computer memory. Typically, the MMU is part of the CPU, though in some designs it is a separate chip. Wiki [http://en.wikipedia.org/wiki/Memory_management entry]

			==Video sync==
	===VBL===		===VBL===
	'''''V'''ertical '''BL'''ank'', i.e. in one frame, normally used for timing of demos and games such that all computation for screen movement are done during this period for smooth animation.		'''''V'''ertical '''BL'''ank'', i.e. in one frame, normally used for timing of demos and games such that all computation for screen movement are done during this period for smooth animation.
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	===HBL===		===HBL===
	'''''H'''orizontal '''BL'''ank'', i.e. in one line, normally used for timing of demos and games such that all computation for screen movement are done during this period for smooth animation.		'''''H'''orizontal '''BL'''ank'', i.e. in one line, normally used for timing of demos and games such that all computation for screen movement are done during this period for smooth animation.

	~~===ROM===~~
	'''''R'''ead-'''O'''nly '''M'''emory'' is computer memory on which data has been prerecorded. Once data has been written onto a ROM chip, it cannot be removed and can only be read hence read-only memory. Wiki [http://en.wikipedia.org/wiki/Read-only_memory entry]

	~~===RAM===~~
	'''''R'''andom '''A'''ccess '''M'''emory'' is a type of computer memory that can be accessed randomly; that is, any byte of memory can be accessed without touching the preceding bytes. RAM is the most common type of memory found in computers and other devices, such as printers. Wiki [http://en.wikipedia.org/wiki/Random-access_memory entry].

	~~===MIDI===~~
	'''''M'''usical '''I'''nstrument '''D'''igital '''I'''nterface'' is a standard adopted by the electronic music industry for controlling devices, such as synthesizers and sound cards, that emit music. Wiki [http://en.wikipedia.org/wiki/MIDI entry].

	===NTSC===		===NTSC===
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	'''''P'''hase '''A'''lternating '''L'''ine'' is a dominant television standard in Europe. The United States uses a different standard, NTSC. Whereas NTSC delivers 525 lines of resolution at 60 half-frames per second, PAL delivers 625 lines at 50 half-frames per second.		'''''P'''hase '''A'''lternating '''L'''ine'' is a dominant television standard in Europe. The United States uses a different standard, NTSC. Whereas NTSC delivers 525 lines of resolution at 60 half-frames per second, PAL delivers 625 lines at 50 half-frames per second.

	===~~CPDL~~===		==Music==
	A '''''C'''''~~omplex~~ '''''P'''''~~rogrammable ''''~~'L'''''~~ogic~~ ''~~'''D'''''evice (CPLD)~~ is a ~~programmable logic device with complexity between that of PALs~~ and ~~FPGAs~~, ~~and architectural features of both~~. Wiki [http://en.wikipedia.org/wiki/~~Complex_programmable_logic_device Entry~~].		===MIDI===
			'''''M'''usical '''I'''nstrument '''D'''igital '''I'''nterface'' is a standard adopted by the electronic music industry for controlling devices, such as synthesizers and sound cards, that emit music. Wiki [http://en.wikipedia.org/wiki/MIDI entry].

	<br />		<br />

>Wongck at 14:40, 7 April 2012

2012-04-07T14:40:01Z

← Older revision		Revision as of 10:40, 7 April 2012
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	'''''P'''hase '''A'''lternating '''L'''ine'' is a dominant television standard in Europe. The United States uses a different standard, NTSC. Whereas NTSC delivers 525 lines of resolution at 60 half-frames per second, PAL delivers 625 lines at 50 half-frames per second.		'''''P'''hase '''A'''lternating '''L'''ine'' is a dominant television standard in Europe. The United States uses a different standard, NTSC. Whereas NTSC delivers 525 lines of resolution at 60 half-frames per second, PAL delivers 625 lines at 50 half-frames per second.

			===CPDL===
			A '''''C'''''omplex '''''P'''''rogrammable '''''L'''''ogic '''''D'''''evice (CPLD) is a programmable logic device with complexity between that of PALs and FPGAs, and architectural features of both. Wiki [http://en.wikipedia.org/wiki/Complex_programmable_logic_device Entry].

	<br />		<br />

>Wongck at 04:11, 19 February 2012

2012-02-19T04:11:21Z

← Older revision		Revision as of 00:11, 19 February 2012
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			<br />
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			Back to [[Main Page]]

	[[Category: Main ]]		[[Category: Main ]]

>Wongck at 15:27, 29 November 2011

2011-11-29T15:27:38Z

← Older revision		Revision as of 11:27, 29 November 2011
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	===PAL===		===PAL===
	'''''P'''hase '''A'''lternating '''L'''ine'' is a dominant television standard in Europe. The United States uses a different standard, NTSC. Whereas NTSC delivers 525 lines of resolution at 60 half-frames per second, PAL delivers 625 lines at 50 half-frames per second.		'''''P'''hase '''A'''lternating '''L'''ine'' is a dominant television standard in Europe. The United States uses a different standard, NTSC. Whereas NTSC delivers 525 lines of resolution at 60 half-frames per second, PAL delivers 625 lines at 50 half-frames per second.



			[[Category: Main ]]

>Wongck: /* VBL */

2011-11-29T15:24:20Z

VBL

← Older revision		Revision as of 11:24, 29 November 2011
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	===VBL===		===VBL===
	'''''V'''ertical '''BL'''ank'', i.e. in one frame, normally used for timing of demos and games such that all computation for screen movement are done during this period for smooth animation.		'''''V'''ertical '''BL'''ank'', i.e. in one frame, normally used for timing of demos and games such that all computation for screen movement are done during this period for smooth animation.

			===HBL===
			'''''H'''orizontal '''BL'''ank'', i.e. in one line, normally used for timing of demos and games such that all computation for screen movement are done during this period for smooth animation.

	===ROM===		===ROM===

>Wongck at 15:23, 29 November 2011

2011-11-29T15:23:03Z

← Older revision		Revision as of 11:23, 29 November 2011
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	===NTSC===		===NTSC===
	'''''N'''ational '''T'''elevision '''S'''ystem '''C'''ommittee''. The NTSC is responsible for setting television and video standards in the United States (in Europe and the rest of the world, the dominant television standards are PAL and SECAM). The NTSC standard for television defines a composite video signal with a refresh rate of 60 half-frames (interlaced) per second. Each frame contains 525 lines and can contain 16 million different colors.		'''''N'''ational '''T'''elevision '''S'''ystem '''C'''ommittee''. The NTSC is responsible for setting television and video standards in the United States (in Europe and the rest of the world, the dominant television standards are PAL and SECAM). The NTSC standard for television defines a composite video signal with a refresh rate of 60 half-frames (interlaced) per second. Each frame contains 525 lines and can contain 16 million different colors.

			===PAL===
			'''''P'''hase '''A'''lternating '''L'''ine'' is a dominant television standard in Europe. The United States uses a different standard, NTSC. Whereas NTSC delivers 525 lines of resolution at 60 half-frames per second, PAL delivers 625 lines at 50 half-frames per second.

>Wongck: /* NTSC */

2011-11-29T15:15:07Z

NTSC

← Older revision		Revision as of 11:15, 29 November 2011
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	===NTSC===		===NTSC===
	'''N'''ational '''T'''elevision '''S'''ystem '''C'''ommittee. The NTSC is responsible for setting television and video standards in the United States (in Europe and the rest of the world, the dominant television standards are PAL and SECAM). The NTSC standard for television defines a composite video signal with a refresh rate of 60 half-frames (interlaced) per second. Each frame contains 525 lines and can contain 16 million different colors.		'''''N'''ational '''T'''elevision '''S'''ystem '''C'''ommittee''. The NTSC is responsible for setting television and video standards in the United States (in Europe and the rest of the world, the dominant television standards are PAL and SECAM). The NTSC standard for television defines a composite video signal with a refresh rate of 60 half-frames (interlaced) per second. Each frame contains 525 lines and can contain 16 million different colors.

>Wongck at 15:14, 29 November 2011

2011-11-29T15:14:50Z

← Older revision		Revision as of 11:14, 29 November 2011
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	===MIDI===		===MIDI===
	'''''M'''usical '''I'''nstrument '''D'''igital '''I'''nterface'' is a standard adopted by the electronic music industry for controlling devices, such as synthesizers and sound cards, that emit music. Wiki [http://en.wikipedia.org/wiki/MIDI entry].		'''''M'''usical '''I'''nstrument '''D'''igital '''I'''nterface'' is a standard adopted by the electronic music industry for controlling devices, such as synthesizers and sound cards, that emit music. Wiki [http://en.wikipedia.org/wiki/MIDI entry].

			===NTSC===
			'''N'''ational '''T'''elevision '''S'''ystem '''C'''ommittee. The NTSC is responsible for setting television and video standards in the United States (in Europe and the rest of the world, the dominant television standards are PAL and SECAM). The NTSC standard for television defines a composite video signal with a refresh rate of 60 half-frames (interlaced) per second. Each frame contains 525 lines and can contain 16 million different colors.