Yamaha Vintage DX7 Special Edition ROM Manuel d'entretien - Page 8

Parcourez en ligne ou téléchargez le pdf Manuel d'entretien pour {nom_de_la_catégorie} Yamaha Vintage DX7 Special Edition ROM. Yamaha Vintage DX7 Special Edition ROM 17 pages. Digital programmable algorithm synthesizer
Également pour Yamaha Vintage DX7 Special Edition ROM : Notes de performance (8 pages), Manuel d'utilisation (34 pages), Manuel du propriétaire (35 pages), Manuel d'instruction (43 pages), Manuel d'installation (7 pages)

Imprimer la page
Yamaha Vintage DX7 Special Edition ROM Manuel d'entretien
4-6.
Data is not accepted from the panel switches and keys while the sub-CPU C2 line is
low.
5.

Main CPU Operation

The main CPU mode is set by externally initializing lines P20~P22. When "L, L, H" is applied to
the P20~P22 lines and latched into the CPU on the rising edge of RES, the Extended Multiplex
Mode is selected.
In this mode, P40 ~ P47 function as address lines. The lower address bits are multiplexed with the
data on lines P30 ~ P37, and are separated by the address strobe signal SCI.
P20 ~ P24 and P10 ~ P17 function as I/O lines.
6.

RAM

M5M511BP-15 X 8-bit CMOS RAM.
7.

ROM

2764 8K X 8-bit NMOS EROM
8.

LED

The LED display is created via software. The LEDs are lit by data latched from the
main CPU.