SKU: 66052366419

All About DOS: Enhanced Edition

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Description

All About DOS: Enhanced EditionAs a guide to DOS 3. 3 for the Apple II, All About DOS contains many useful programs and in depth topics. This new Enhanced Edition, encompassing over 560 pages, is improved with a new design, art, glossary, and technical appendices. It includes a wide variety of references and how tos, making it a great reference for Apple II programmers. Highlights Include: "How DOS Works" RWTS, Internals, Diskettes. The Directory" Sectors, Catalog Edit, Wildcards.

As a guide to DOS 3.3 for the Apple II, All About DOS contains many useful programs and in-depth topics. This new Enhanced Edition, encompassing over 560 pages, is improved with a new design, art, glossary, and technical appendices. It includes a wide variety of references and how-toÕs, making it a great reference for Apple II programmers. Highlights Include:

Ð "How DOS Works" Ð RWTS, Internals, Diskettes.
Ð ÒThe Directory" Ð Sectors, Catalog Edit, Wildcards.
Ð "File Handling" Ð Sequential to Random files, EXEC
Ð "Speeding Up DOS" Ð Fast Boot, Loaders for Text, BASIC, Binary.
Ð "Repairing Bugs" Ð Sequential files, Sector display, Stack.
Ð "DOS Modifications" Ð Customizing, Using available holes in DOS.
Ð "'R' Files: Relocatable Object Code" Ð Create code with the Toolkit assembler.
Ð ÒUtilities" Ð Automate DOS patches, Disk Error Checking
Ð "Memory Management" Ð Moving DOS to the Language Card.
Ð "Other Operating Systems" Ð DOS 4.1, Pascal, CP/M, TRS-80, Atari.

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SKU: 66052366419

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mike
Cuba, US
★★★★★ 5
Great ball for heavy chewers
Style: Assorted Balls (Pack of 3), Size: 2.5 inch
Great toy for my Doberman. She chews through tennis balls in about 15 minutes but these are very durable. She likes to chase them but also just chew on them.
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Reviewed in the United States on April 26, 2026
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Me
Boise, US
★★★★★ 5
Durable
Style: Fetch Balls (Pack of 2), Size: 3 inch
Very bouncy. I like the noise it makes when you throw it. Pretty durable. Good size. Dog loves to play with them. Good material. Easy to use.
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Reviewed in the United States on April 5, 2026
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Susan Cedar
Los Angeles, US
★★★★★ 4
My dog loves glowing fetch at night!
Style: Glow Balls (Pack of 3), Size: 2.5 inch
Fantastic. Sturdy. My dog loves them Glow in the dark is great for fetch at night. I keep a flashlight with me because the glow doesn't last really long. But they charge very quickly and are really bright.
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Reviewed in the United States on February 22, 2026
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Maddox
Carnegie, US
★★★★★ 5
Indestructible
Style: Fetch Balls (Pack of 2), Size: 3 inch
These balls are indestructible! We have a lab and a lab mix and they CANNOT damage these balls. They love them for fetch and to just chew on them (slightly squishy, but NO damage). Best toys we have bought for them.
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Reviewed in the United States on April 19, 2026
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Animal Lover
West Palm Beach, US
★★★★★ 5
Great trial set. Just be careful throwing the orange one!
Style: Assorted Balls (Pack of 3), Size: 2.5 inch
Blue isn't that easy to see in the yard White charges with bright light/UV and is truly a game changer for night-time fetch. Both dogs clearly favor it. Orange is easy to see in the grass at day They're 3 different weights as well, so double trial. I prefer medium for my big dogs, though light performs well too The orange is HEAVY and unyielding. Do NOT throw it with a ball thrower. It could damage your house or knock your dog out. Seems tough though.
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Reviewed in the United States on January 16, 2026

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