Toshiba a écrit:Product name:
TOSHIBA Microcontrollers T4X Series
Dear Customer
With regard to our T4X Series of 4-bit microcontrollers, we have found that the following problem may occur when some data is loaded from Work RAM to Flag-Register. If this issue presents you with any problem, please contact your local Toshiba sales office.
Problem
Memory Bank Information (DMB) for Work RAM may have an unexpected value when executing Load Instruction from Work RAM to Flag-Register.
Condition
Condition 1: execute “LD F,M” instruction
Condition 2: execute “LDB AF,M” instruction
If you execute writing operations to Memory Bank information (DMB 2, 3) at Flag-Register in any of the two above-mentioned conditions, a problem may occur.
Caution
Do not use both instructions, “LD F,M” and “LDB AF,M”.
http://www.semicon.toshiba.co.jp/eng/pr ... _2973.html
On y apprend donc les noms de 2 instructions: ld et ldb.
Ce n'est certes pas grand chose, mais cela nous indique l'existence d'un assembleur officiel documenté par Toshiba.
Hélas, contrairement à d'autres puces, je ne trouve aucun document ou utilitaire de développement pour la série T4X sur le site de Toshiba. Peut-être ne sont-ils pas publics, et fournis uniquement aux professionnels...