S Chand Advanced Computer Architecture by Dr. Rajiv Chopra
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- AGA is able to display graphics modes with a depth of up to 8 bits per pixel. This allows for 256 colors in indexed display modes and 262,144 colors (18-bit) in Hold-And-Modify (HAM-8) modes.
- The palette for the AGA chipset has 256 entries from 16,777,216 colors (24-bit), whereas previous chipsets, the Amiga Original Chip Set (OCS) and Amiga Enhanced Chip Set (ECS), only allowed 32 colors out of 4096 (64 colors in Amiga Extra Half-Brite (EHB mode)).
- Other features added to AGA over ECS were super-hi-res smooth scrolling and 32-bit fast page memory fetches to supply the graphics data bandwidth for 8 bitplane graphics modes and wider sprites. AGA was an incremental upgrade, rather than the dramatic upgrade of the other chipset that Commodore had begun in 1988, the Amiga Advanced Architecture chipset (AAA), lacking many features that would have made it competitive with other graphic chipsets of its time.
- Apart from the graphics data fetches, AGA still operates on 16-bit data only, meaning that a lot of bandwidth is wasted during register accesses and Amiga 'copper' and blitter operations. Also the lack of a chunky graphics mode is a speed impediment to graphics operations not tailored for planar modes, resulting in ghost artifacts during the common productivity task of scrolling
| Product Name | S Chand Advanced Computer Architecture by Dr. Rajiv Chopra |
|---|---|
| ISBN / Product Code | 9788121930772 |
| Binding | Paperback |
| Publisher | S Chand & Company |
| Subject : College Books | Computer Science |
| HSN Code | 4901 |
| Company Details | Published by S Chand and Company Ltd , Hero Cycle Compound Plot no-8, Sahibabad Industrial Area, Site -IV, Dis- Ghaziabad, Opposite Passport Kendra, Pin code- 201010 E-mail : customercare@schandpublishing.com Ph-no- 0120-4176248 / 4261379 |
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