C-Net Week #02 24 октября 1997

Железо

Iron - Wiring a PC connectors "byte", not all contacts in a row, and only needed to Connecting the C-DOS modem.

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 Today I decided to offer you raspayku connector
nk "byte". Not everybody who contacts, and only needed to
Connecting the C-DOS modem.
 This action started, not for the purpose, something to show 
their deep knowledge of hardware / why not? :-) /, And so

protect from the questions:


   - Do not you tell me what it signals to the connector "Byte"

     but then I lost my book!? : (

Begs the question: what, today, a day of orphaned books:)
Well jokes vstoronu.Zhelezo it seriously. And actually I
bought a book about all the connectors, the truth about the PC. 
Well, I think, and beloved Speccy it will be useful: When you 
connect claves, monitor or a screw that I think will not burn:)


Well as you probably know from the warranty card, a jumper
on-board modem to be for "byte" razomknuta.Esli you
The guarantee is no coupon, it begs the question of involuntary 
and hdey something you actually preobreli modem? : (




     Contact MDM Circuit Output Z-80 Kont.Bayt


         A D7 B22 1913


         2 +5 V +5 V B32


         3 D6 B25 1910


         April 7 D4 B20


         May 9 C20 D5


         6 Total OVERALL B1


         7 / WR 22 C23


         8 / RD 21 A23


         9 / IORQ 20 A24


        1910 A3 * 1933 B29


        A7 * 11 37 B30


Circuit A3 and A4 show a connection to port # 77. If you
for whatever reasons, decided to change the port. / Maybe
you there is already connected to a vacuum cleaner:), then you 
have to search my old baytovskuyu book and self-

find the right kontakty.Na just in case recall, as
Spectrum organized system of addressing.

Contact A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

Bits 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
defining \ _____________ _____________/ \ ___________ ________/
e \ / \ /
Port Senior Junior tetrad tetrad

                                    Address

 Now, explain: If you have a modem connected to the terminals 
A3 and A7, then we put these contacts as 1 and all ostalnuy as 
0, we obtain two numbers bin% 00000000% 10001000. Bringing it 
into hexadecimal system we obtain the number # 77 - here he 
is-and has a port. By analogy Counted every other Ares.

 If you have any questions on this subject Cast mesag on REST
BBS, or maybe on the Ascendancy Home Web Page:)

 The next time we will connect Kempston mouse, and
svazannye with this problem.