Sweet16 - Revision history

Jnc: +cat

2018-12-16T23:28:54Z

+cat

← Older revision		Revision as of 23:28, 16 December 2018
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	* [http://www.6502.org/source/interpreters/sweet16.htm An extensive discussion of the interpreter and source code]		* [http://www.6502.org/source/interpreters/sweet16.htm An extensive discussion of the interpreter and source code]

			[[Category: Apple II software]]

Tor: Added Sweet16 Opcode table

2013-02-15T10:18:09Z

Added Sweet16 Opcode table

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 According to Wozniak, the SWEET16 implementation is a model of frugal coding, taking up only about 300 bytes in memory. SWEET16 runs about 10 times slower than the equivalent native [[MOS Technology 6502|6502]].
 == External Links ==
 * [http://www.6502.org/source/interpreters/sweet16.htm An extensive discussion of the interpreter and source code]

Lucky at 02:16, 18 May 2007

2007-05-18T02:16:29Z

← Older revision		Revision as of 02:16, 18 May 2007
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	This is a masterpiece of 6502 programming as far as I'm concerned [[User:Lucky\|Lucky]] 19:06, 17 May 2007 (PDT)		This is a masterpiece of 6502 programming as far as I'm concerned [[User:Lucky\|Lucky]] 19:06, 17 May 2007 (PDT)


	{{wp-orig}}		{{wp-orig}}
			'''SWEET16''' is an interpreted byte-code language invented by Steve Wozniak and implemented as part of the [[Integer BASIC]] ROM in the Apple II computer. It was created because Wozniak needed to manipulate 16-bit pointer data in his implementation of [[BASIC]], and the [[Apple II]] was an 8-bit computer.
	'''SWEET16''' is an interpreted byte-code language invented by Steve Wozniak and implemented as part of the [[Integer BASIC]] ROM in the Apple II computer. It was created because Wozniak needed to manipulate 16-bit pointer data in his implementation of [[BASIC]], and the Apple II was an 8-bit computer.

	SWEET16 code is executed as if it were running on a (non-existent) 16-bit processor with sixteen, internal 16-bit little-endian registers, R0 through R15. Some registers have well-defined functions:		SWEET16 code is executed as if it were running on a (non-existent) 16-bit processor with sixteen, internal 16-bit little-endian registers, R0 through R15. Some registers have well-defined functions:
Line 15:		Line 12:
	The 16 virtual registers, 32 bytes in total, are located in the [[zero page]] of the Apple II's real, physical memory map (at $00-$1F). The actual SWEET16 interpreter is located from $F689 to $F7FC.		The 16 virtual registers, 32 bytes in total, are located in the [[zero page]] of the Apple II's real, physical memory map (at $00-$1F). The actual SWEET16 interpreter is located from $F689 to $F7FC.

	According to Wozniak, the SWEET16 implementation is a model of frugal coding, taking up only about 300 bytes in memory. SWEET16 runs about 10 times slower than the equivalent native [[MOS Technology 6502\|6502]]		According to Wozniak, the SWEET16 implementation is a model of frugal coding, taking up only about 300 bytes in memory. SWEET16 runs about 10 times slower than the equivalent native [[MOS Technology 6502\|6502]].

	== External Links ==		== External Links ==

	* [http://www.6502.org/source/interpreters/sweet16.htm An extensive discussion of the interpreter and source code]		* [http://www.6502.org/source/interpreters/sweet16.htm An extensive discussion of the interpreter and source code]

Lucky at 02:06, 18 May 2007

2007-05-18T02:06:22Z

← Older revision		Revision as of 02:06, 18 May 2007
Line 6:		Line 6:
	'''SWEET16''' is an interpreted byte-code language invented by Steve Wozniak and implemented as part of the [[Integer BASIC]] ROM in the Apple II computer. It was created because Wozniak needed to manipulate 16-bit pointer data in his implementation of [[BASIC]], and the Apple II was an 8-bit computer.		'''SWEET16''' is an interpreted byte-code language invented by Steve Wozniak and implemented as part of the [[Integer BASIC]] ROM in the Apple II computer. It was created because Wozniak needed to manipulate 16-bit pointer data in his implementation of [[BASIC]], and the Apple II was an 8-bit computer.

	SWEET16 code is executed as if it were running on a (non-existent) 16-bit ~~[[Central processing unit\|~~processor]] with sixteen, internal 16-bit little-endian registers, R0 through R15. Some registers have well-defined functions:		SWEET16 code is executed as if it were running on a (non-existent) 16-bit processor with sixteen, internal 16-bit little-endian registers, R0 through R15. Some registers have well-defined functions:

	* R0 is the accumulator.		* R0 is the accumulator.

Lucky: New page: This is a masterpiece of 6502 programming as far as I'm concerned ~~~~ {{wp-orig}} '''SWEET16''' is an interpreted byte-code language invented by Steve Wozniak and implemented as part o...

2007-05-18T02:06:00Z

New page: This is a masterpiece of 6502 programming as far as I'm concerned ~~~~ {{wp-orig}} '''SWEET16''' is an interpreted byte-code language invented by Steve Wozniak and implemented as part o...

New page

This is a masterpiece of 6502 programming as far as I'm concerned [[User:Lucky|Lucky]] 19:06, 17 May 2007 (PDT)

{{wp-orig}}

'''SWEET16''' is an interpreted byte-code language invented by Steve Wozniak and implemented as part of the [[Integer BASIC]] ROM in the Apple II computer. It was created because Wozniak needed to manipulate 16-bit pointer data in his implementation of [[BASIC]], and the Apple II was an 8-bit computer.

SWEET16 code is executed as if it were running on a (non-existent) 16-bit [[Central processing unit|processor]] with sixteen, internal 16-bit little-endian registers, R0 through R15. Some registers have well-defined functions:

* R0 is the accumulator.
* R14 is the status register.
* R13 stores the result of all comparison operations for branch testing.
* R15 is the program counter.

The 16 virtual registers, 32 bytes in total, are located in the [[zero page]] of the Apple II's real, physical memory map (at $00-$1F). The actual SWEET16 interpreter is located from $F689 to $F7FC.

According to Wozniak, the SWEET16 implementation is a model of frugal coding, taking up only about 300 bytes in memory. SWEET16 runs about 10 times slower than the equivalent native [[MOS Technology 6502|6502]]

== External Links ==

* [http://www.6502.org/source/interpreters/sweet16.htm An extensive discussion of the interpreter and source code]