Difference between revisions of "Category:84PCE:General Hardware Information"
From WikiTI
KermMartian (Talk | contribs) |
|||
| Line 13: | Line 13: | ||
** Possibly an ARM Primecell PL111 | ** Possibly an ARM Primecell PL111 | ||
* French version has testing LED; American version may get a testing LED in the future | * French version has testing LED; American version may get a testing LED in the future | ||
| − | * User programs are | + | * User programs are prohibited from using any IN/OUT instructions |
** OUT causes a reset | ** OUT causes a reset | ||
** IN produces a constant value | ** IN produces a constant value | ||
| − | ** | + | *** Rather, port are now memory mapped to certain RAM addresses |
| + | *** However, ports controlling items such as the testing LED remain off-limits, for good reasons. | ||
* Flash starts at $000000 | * Flash starts at $000000 | ||
| − | ** There is | + | ** There is also still a flash unlock sequence |
* RAM starts at $D00000 | * RAM starts at $D00000 | ||
* Assembly programs and TI-BASIC programs are limited to one sector (64KB) | * Assembly programs and TI-BASIC programs are limited to one sector (64KB) | ||
* VRAM starts at $D40000 | * VRAM starts at $D40000 | ||
** VRAM is executable | ** VRAM is executable | ||
Revision as of 23:53, 30 March 2015
The TI-84 Plus CE and TI-83 Premium are two models new in 2015. The former is for the USA region (maybe all of North American?) and the latter is for France. The hardware is virtually identical between the two models.
Known hardware facts:
- eZ80 CPU
- Physical clock speed believed to be 48 MHz
- Effective clock speed between 12-15 MHz
- CPU might be clocked faster but have a lot of wait states
- 4 MB flash chip
- Bottom-boot organization this time
- 256 K main RAM
- Memory-mapped LCD
- 153600 bytes of VRAM confirmed, unknown if more exists
- Possibly an ARM Primecell PL111
- French version has testing LED; American version may get a testing LED in the future
- User programs are prohibited from using any IN/OUT instructions
- OUT causes a reset
- IN produces a constant value
- Rather, port are now memory mapped to certain RAM addresses
- However, ports controlling items such as the testing LED remain off-limits, for good reasons.
- Flash starts at $000000
- There is also still a flash unlock sequence
- RAM starts at $D00000
- Assembly programs and TI-BASIC programs are limited to one sector (64KB)
- VRAM starts at $D40000
- VRAM is executable
Pages in category "84PCE:General Hardware Information"
The following 3 pages are in this category, out of 3 total.
