TI on Supplementary Manual

TI-83 Plus Developer Guide 

 

Beta Version May 16, 2001 

 

The following information is provided as an addendum to the TI-83 Plus Developer 
Guide Version 1.0. This text provides additional information for

 

developing applications 

and assembly programs for the TI-83 Plus 

SILVER EDITION

. Specific information deals 

with the Flash ROM size and processor speed changes over the TI

-

83 Plus graphing 

calculator platform. 

The TI-83 Plus 

SILVER EDITION

 has the capability to load up to 94 Flash Apps and has a 

clock speed that is more than twice as fast as the standard TI-83 Plus. For compatibility, 
the TI-83 Plus 

SILVER EDITION

 runs programs and applications at the standard 

TI-83 Plus speed. The TI-83 Plus 

SILVER EDITION

 also contains a hardware assist to 

speed up link communication. 

Flash Apps can utilize new Operating System (OS) calls or header settings to take 
advantage of the increased speed. Assembly programs can also use the OS calls to set 
speed. The new calls will not be recognized by older OSs so it is important for the 
developer to check OS versions when making these calls. 

The TI-83 Plus 

SILVER EDITION

 Flash ROM is composed of 2048K (2M) bytes divided 

into 128 pages, each of which is 16K bytes in size. The structure is generally the same 
as the TI-83 Plus except for the inclusion of 96 additional 16K pages (24 additional 64K 
Sectors). The TI-83 Plus 

SILVER EDITION

 can store up to 94 Apps in pages 0Ch – 69h. 

The TI-83 Plus Flash structure chart, Figure 2.5 in the TI-83 Plus Developer Guide 
Version 1.0, is correct up to page 14h; at that point, the TI-83 Plus 

SILVER EDITION

 

includes more data pages. The TI-83 Plus 

SILVER EDITION

 also has the Operating 

System residing at the high 8 pages of Flash, 78h . . . 7Fh. The TI-83 Plus high memory 
is 18h . . . 1Fh.