City #16 29 июня 1999

Железо

Iron - connecting videopopta (digitizer) AP Manilow (ZX-FORUM # 2).

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                 PLANET SHELEZYAKA
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  (C) V. Kazakov

 Today I have published articles about how to connect video port
AP Manilow (ZX-FORUM # 2), which was published in the ZX-PILOT 
# 31 and kindly provided for publication in our newspaper 
VELom.  Published, only that part of the article, which 
provides additional guidance on connecting video port to your 
computer.  Full article can be found in the ZX-FORUM # 2

or ZX-PILOT # 31, which are available in our editorial.

(C) AlphA Studio


    The most extensive recommendation for those
users SPECTRUM, which have in their competence
Parallel on KR580VV55A. Attaching
VideoPort through this port can be thrown out of the scheme
several chips and components, namely, D20, D21,
D22, D23, D13.6, R6, VD8 and VD9. Signals going to the
IC D20 (IR22), a register of data
devices connected to port A veveshki. Signal
READY, initially entering the computer through
register D21, connect to a conclusion C0 (vyv.14) VV55A,
and control signals to the device VideoPort - to
B port chip parallel port. For those
who wants to install on your PC chip
KR580VV55A, I advise you to apply to the article in the 
newspaper ECHO # 5 (Brest). Below is a wiring diagram

VideoPort device to a computer via mikruhu
KR580VV55A.



               A0 April 1917 W

      KR580 A1 March 1918 and

      VV55A A2 2 19 n

               A3 January 1920 and

               A4 40 21

               A5 39 22 y

               A6 38 23 with

               A7 37 24 m

                                      p

               B0 18 41 on

               B1 19 42

               B2 20 43 m

               B3 21 54 in

               B4 22 16 and

               B5 23 55

               B6 24

               B7 25 AND

                                      D

               C0 14 39 E

               C1 15 O

               C2 16 P

               C3 17 O

               C4 1913 F

               C5 12 T

               C6 1911

               C7 1910



    Listing support programs VIDEOPORT'a
make the following additions and small difference.

    Change the port values ​​in the rows:
 PDAT EQU # 1F; Port A VV55A
 PUPR EQU # 3F; port B VV55A
 PSOST EQU # 5F; port C VV55A

    Add the program initialization string
VV55A:
 BEGIN LD A, # 91

        OUT (# 7F), A; # 7F - address register

              . . . ; Control word

                    ; KR580VV55A

    Veveshki port addresses are given for computer
Baltic, if your comp they are different,
should be replaced with their values.

    To simplify the assembly of printed circuit board
design, we can advise soldered chip
memory of one over the other, pre-tilting
20 feet. This saves space and simplifies wiring
seals.

    That's all. You can start assembly. If that
unclear, write. Address in the editorial (Editorial ZXPILOT - 
VK).