ZX Power #02 24 мая 1997

Доработки     Железо

Iron - Serial-VCOM-for Spectrum.

 -= Vic =
        presents for you


     Serial port

         for Spectruma!
________________________________


   This article is a revised description of VCOM, which will 
connect to your computer any external device, designed for the 
serial port, such as a mouse, modem or printer. Software 
software you can order me by phone, given at the end of the 
article. Thus, concept:




vyv.4 D5 and D6 connected to GND
Vyv.5 D5 and D6 connected to-12V
Vyv.8 D5 and D6 connected to +12 V


   Address controller ports:


   # 80F7, # 81F7, # 82F7, # 83F7 -
Ports timer.

   # 90F7, # 91F7 - interface ports COM1.


   When working with the port first
must be programmed
Timer mode is frequency division
(Mode 3). It should be
make sure that the resulting
frequency does not extend beyond
valid values ​​(maximum input frequency
RxC / TxC USART on the passport is 615 KHz).


   Type of application connectors -
DB-25P (standard plug an external modem). For those who do not
knows, DB-25P connector means
such as "fork" or "Dad."


   To connect COM2 to use 3 chip
(VV51, UP2, An2). To the inputs 9 and
1925 USART must be submitted instead of the signal FR1 FR2 
signal with the timer and the input signal 11 from 13 O ID7. 
For signal TxD you must use a free half D5.


   For more information, please contact me directly.


     (C) Vic at 07.02.97

   Phone: (0572) 10-50-26,

      Victor asked.