Chloe 280SE: Difference between revisions
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* 32K of contended VRAM (page 5 and 7 in the HOME bank) | * 32K of contended VRAM (page 5 and 7 in the HOME bank) | ||
* No RAM contention when paging sideways RAM over the HOME bank. | * No RAM contention when paging sideways RAM over the HOME bank. | ||
* 32K Flash ROM (no TR-DOS traps, SE Basic is the default firmware). | * 32K Flash ROM (no TR-DOS traps, [[SE Basic IV]] is the default firmware). | ||
* ULAplus support in all video modes. | * ULAplus support in all video modes. | ||
* Z84C0020PEG CPU (software switchable between 3.5Mhz and 21Mhz). | * Z84C0020PEG CPU (software switchable between 3.5Mhz and 21Mhz). | ||
* YM219F PSG (software switchable stereo panning). | * YM219F PSG (software switchable stereo panning). |
Revision as of 13:12, 30 January 2013
Infobox: Chloe 280SE
Manufacturer | Specification only |
Mfg. volume | None |
CPU | Z804C0020 @ 3.5MHz / 21MHz |
ROM | 32kB |
RAM | 256kB |
as pages | 64kB + 64kB + 128kB |
Gfx Res | 256x192 or 512x192 (hi-res) |
Gfx Colours | 256 (2 per 8x8 or 8x1 cell), or 2 (hi-res) |
The Chloe 280SE is a reference specification for a production version of the ZX Spectrum SE. It has the following differences:
- T-states are exactly as per the 48K Spectrum.
- 256K total RAM (no page 8 in the HOME bank, and no 8K serial RAM on the PSG)
- 224K of uncontended RAM (64K in each sideways bank, 96K in the HOME bank)
- 32K of contended VRAM (page 5 and 7 in the HOME bank)
- No RAM contention when paging sideways RAM over the HOME bank.
- 32K Flash ROM (no TR-DOS traps, SE Basic IV is the default firmware).
- ULAplus support in all video modes.
- Z84C0020PEG CPU (software switchable between 3.5Mhz and 21Mhz).
- YM219F PSG (software switchable stereo panning).