Link PC -> ZX

Hello All! I was terribly sick with the idea of ​​the subject. I know there is firewood for MMD. And I know about device that runs on the MAC. Is there a diagram of this device somewhere? Or even better: no one will dare to make such a device for a certain fee? Co all suggestions in the soap, with information - in the echo :) Vega/ex-Style Group. FIDO: 2:5030/885.34 ZXNET: 500:812/5.13 E-mail: vega56@mail.ru

Hello Vlad! 08 Apr 02 23:27, Vlad Sotnikov -> All: VS> I was terribly sick with the idea of the subject. I know that there is firewood for MMD. And VS> I know about the device that works on the MAC. There is a diagram somewhere VS> of this device? Or even better: no one will dare to make one VS> device for a certain fee? With all the proposals in soap, s VS> information - in ehy :) Mlyn, maybe I should send you a link diagram every month? ;) ╒═════════════════════════ Home ZX-LINK.HLP ═════════════════════════╕ area / SPBZXNET.GENERAL from / Aleksandr Majorov to / All subj / ZX <-> PC link date/01-03-99 time / 18:04:53 Hayushki, All! Actually, the subject worked out. File flies here/here. The total file transfer time is 255 seconds (including issuing the command and writing to disk) is: Computers: Turbocharged yellow scorpion in turbo mode and stump-166 On Speck I used either access #3D13, Fast-loader or RAM-disk PC ==> ZX Normal 44 sec. = 5.8 sectors per second, CPS=1485, BPS=11880 Fast 41 sec. = 6.2 sectors per second, CPS=1587, BPS=12696 RAM-disk 35 sec. = 7.3 sectors per second, CPS=1869, BPS=14952 ZX ==> PC Normal 41 sec. = 6.2 sectors per second, CPS=1587, BPS=12696 Fast 36 sec. = 7.1 sectors per second, CPS=1817, BPS=14536RAM-disk 29 sec. = 8.8 sectors per second, CPS=2253, BPS=18024 connection diagram: I connected via optocouplers, whoever doesn’t want to can Connect directly at your own risk :-) However, switching on without galvanic isolation works fine. ZX PC (system connector) (LPT 25-pin) Centr0 (18B) ─────────>──────────────── Error (15) Centr1 (17A) ─────────>──────────────── Paper Out (12) Kempj0 (12B) ─────────<──────────────── Data0 (2) Kempj1 (12A) ─────────<──────────────── Data1 (3) On the scorpion you need to make a small modification: according to the Kempston joystick input diagram, they are pulled to the ground resistors somewhere in the range of 100...510 Ohms. These resistors need to be replaced with 3...10 KOhm. Moreover, this will not affect the operation of the Kempston joystick! (if someone needs it ;-) Galvanic isolation diagram: ZX ┌───────┐ PC │3 │ 1┌─┴─┐ │ Centr0 ────▓▓▓▓──┤ │8 │ │ ├────────── Error ┌───────┤ │ │ │ 2└─┬─┘ ├──── +5 │ │7 │ │ └─────┐ │ │ ┌───────┘ │ │3 ├────── GND │ 1┌─┴─┐ │ Centr1 ────▓▓▓▓──┤ │8 │ │ │ ├────────── Paper Out └──┬────┤ │ │ │ 2└─┬─┘ │ │ │7 ││ └─────┤ │ │ +5 ───────┬────┐3 │ │ │ ┌─┴─┐1 │ │ │ 8│ ├──────▓▓▓▓── Data0 Kempj0 ──────────┤ │2 │ │ │ │ ├───┤ │ │ └─┬─┘ │ GND ─────┼──────┘7 │ │ │ │ │ └────┐3 │ │ ┌─┴─┐1 │ │ 8│ ├──────▓▓▓▓── Data1 Kempj1 ──────────┤ │2 │ │ │ ├───┘ │ └─┬─┘ └──────┘7 Mikrykhi - 262KP1A or similar optical keys with amplifiers, 300 ohm outputs. Obviously, you can make a denouement completely differently, it is possible not to make a decoupling at all, if someone I want... Port addresses: ZX PC output: #DD input: #379 bit0 ───────>─────── bit3 bit1 ───────>─────── bit5 input: #1F output: #378 bit0 ───────<─────── bit0 bit1 ───────<─────── bit0 #379 - LPT-1 Printer status register #378 - LPT-1 Data Register ***************************************************************** Management This version of zx-link works _only_ paired with Spectrum terminal MMD version 2.20 and higher, 4.00 and above. After starting zx-link it goes into standby mode data or commands. From Speck's side, you can simply transmit files, and they will be accepted into the current directory.Everything else is organized at the level of control commands. If you call zx-link with the key "/?" then a short one will be displayed hint on control from the command line. Command format on the command line: / There can be several commands on the command line, separated by a space, they will be executed in the specified sequences. ====================== HELP 1 ======================== /?1 /?2 /?2 first / second / third help page /Q finish work /I transmit system information /H0 /H1 reset/set the reception flag in HOBETA format /K0 /K1 reset/set the 'delete transferred files' flag /E0 /E1 reset/set the 'show keys pressed' flag /R= execute DOS command /C= change the current directory. Please indicate the path in full! /V transfer the contents of the current directory as a file /O= transfer files by mask /F= Mark files by mask and transfer them using the MMD command /S= pass lines /D0...4 change disk to MMD /W0...255 set end timer /M= connect disk image for remote access ====================== HELP 2 ======================== /?1 /?2 /?2 first / second / third help page Command line: / / ...Remote control: Instead of the "/" symbol, the "." symbol is used. (21, #15), data is transmitted at "PC-Link" speed Several commands can be transmitted by a macro at the same time. Each command must end with a SPACE or LINE FEED character. Working with a disk image: Remote sector read: Request accepted: #0A, 'r