City #16
29 июня 1999 |
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Iron - connecting videopopta (digitizer) AP Manilow (ZX-FORUM # 2).
-------------------------------------------------- PLANET SHELEZYAKA -------------------------------------------------- (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).
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