In previous news, ticalc.org started to publicly address the performance of the new TI-84 Plus C Silver Edition. But before even speaking of the TI-Basic and asm performance, let's have a look at the system menus behaviour.
Firstly the MODE menu. Its display was almost instantaneous on the TI-83 Plus. It was a little slowed down on the the faster TI-84 Plus because of the use of small font. Now on TI-84 Plus Silver Edition C it needs almost one second to display! :O Its display is so slow that it becomes perfectly feasible to take a photo with half the menu:
Now for the system menus using the large font.
Navigating through those menus was instantaneous on the old TI-83 Plus and TI-84 Plus. But now on the TI-84 Plus C Silver Edition we see clearly see the refresh from top to bottom. This means in particular that we can not use the calculator on the same typing speed as the old calculators. We must wait until the screen refresh is completed, or some keypresses are going to be ignored.
For example in the video below, I press four times the right arrow at the same speed on TI-84 Plus and TI-84 Plus C Silver Edition to navigate the menus. The TI-84 Plus C Silver Edition ignores half of my keypresses! :O I admit that it is quite painful when using the TI-Basic editor in insert mode or when you are at the bottom of the screen, but maybe it's because I'm too accustomed to previous TI-z80 models and a new user wouldn't mind?
If there is no way to improve this speed, it would be nice to create a buffer capable of storing a list of unhandled keypresses, which will have to be processed in order later, once the CPU is available again - it allready existed in the early 1990s on the HP-48 calculators.
Video of the test:
Source:
http://tiplanet.org/forum/viewtopic.php?t=11302&lang=en
Firstly the MODE menu. Its display was almost instantaneous on the TI-83 Plus. It was a little slowed down on the the faster TI-84 Plus because of the use of small font. Now on TI-84 Plus Silver Edition C it needs almost one second to display! :O Its display is so slow that it becomes perfectly feasible to take a photo with half the menu:
Now for the system menus using the large font.
Navigating through those menus was instantaneous on the old TI-83 Plus and TI-84 Plus. But now on the TI-84 Plus C Silver Edition we see clearly see the refresh from top to bottom. This means in particular that we can not use the calculator on the same typing speed as the old calculators. We must wait until the screen refresh is completed, or some keypresses are going to be ignored.
For example in the video below, I press four times the right arrow at the same speed on TI-84 Plus and TI-84 Plus C Silver Edition to navigate the menus. The TI-84 Plus C Silver Edition ignores half of my keypresses! :O I admit that it is quite painful when using the TI-Basic editor in insert mode or when you are at the bottom of the screen, but maybe it's because I'm too accustomed to previous TI-z80 models and a new user wouldn't mind?
If there is no way to improve this speed, it would be nice to create a buffer capable of storing a list of unhandled keypresses, which will have to be processed in order later, once the CPU is available again - it allready existed in the early 1990s on the HP-48 calculators.
Video of the test:
Source:
http://tiplanet.org/forum/viewtopic.php?t=11302&lang=en