Epson PX4 info page. Pinouts and circuit diagrams: RS232 Serial Port Parallel Printer Port Config DIP Switches System Bus Port

Transcription

1 Epson PX4 info page Epson PX4 info page Pinouts and circuit diagrams: RS232 Serial Port Parallel Printer Port Config DIP Switches System Bus Port Also i have summarised the PX4 manual with this CP/M command reference. Extra Info: A bunch of useful programs for use on and with the px4 can be found at ftp://ftp.discordia.org.uk/pub/ discordia/cpm such as EPROM images for the utilities, a cp/m emulator, filink file transfer tools, and assorted other utils. Hopefully more information will follow as time allows, please any requests for information to madmitch@discordia.org.uk and i will try to find it and post it up. file:///d /pdf/px4/index.htm :57:04

2 PX4 Parallel Printer Port PX4 Parallel / Printer Interface PX-4 is equipped with a Centronics-type parallel interface which makes it possible to connect it to similarly equipped printers. Pin No. Symbol Direction Signal Name Centronics 1 CG - Ground 17 2 CG - Ground 17 3 PD7 OUT Parallel Data 9 4 BSY IN Printer Busy 11 5 PD6 OUT Parallel Data V Power Supply 7 PD5 OUT Parallel Data V Power Supply 9 PD4 OUT Parallel Data 6 10 GND - Signal Ground PD3 OUT Parallel Data 5 12!ERR IN Error Signal from Printer PD2 OUT Parallel Data 4 14 GND - Signal Ground PD1 OUT Parallel Data 3 16!INIT OUT Reset Signal PD0 OUT Parallel Data 2 18 GND - Signal Ground 30 19!STB OUT Strobe Signal file:///d /pdf/px4/parallel.html (1 of 2) :57:04

3 PX4 Parallel Printer Port Notes:! symbolizes inverted signal lines Centronics column refers to pin wirings to connect to a standard centronics 32 pin connector. file:///d /pdf/px4/parallel.html (2 of 2) :57:04

4 PX4 RS232 Port PX4 RS232 Serial Interface 8-pin miniature DIN connector (female) Pin No. Symbol Signal Direction Signal Name 1 GND - Ground 2 TXD OUT Transmitted data 3 RXD IN Recieve data 4 RTS OUT Request to send 5 CTS IN Clear to send 6 DSR IN Data set ready 7 DTR OUT Data terminal ready 8 DCD IN Data carried detect E CGND - Frame Ground All signal directions as viewed from PX-4 To connect use Maplins order code JX06G 8pin miniature DIN line plug. file:///d /pdf/px4/serial.html :57:04

5 PX4 System Bus Port PX4 System Bus Interface 50-pin IDC connector (male) Location: Left hand edge of the machine, with a small clip on cover. This is where RAM expansion modules and similar devices are attached. [Image of connector later] Description: 50 pin flat connector with two rows of pins, with the notches placed at the bottom, pin 1 is the bottom left hand pin, and pin 2 is above it. pin 49 is bottom right, with pin 50 being top right. Pin No. Symbol I/O Signal Name 1 VCH P/S Battery charger line 2 VB1 P/S Battery power 3 VB2 P/S Battery power 4 VBK P/S Battery power 5 GND - Signal ground 6 VL P/S Power for logics 7 DB7 TTL Data 7 14 DB0 TTL Data 0 15!MEN In Internal Memory Enable 16!INTE In External interrupt 17!WAIT In Z-80 wait 18 PON Out Power ON 19!CLK Out Z-80 main clock 20 BUAK Out Bus acknowledge 21!RD Out Z-80 data read 22!IORQ Out Z-80 data request 23!WR Out Z-80 data write 24!MRQ Out Z-80 memory request 25!HLTA Out Halt acknowledge 26!BURQ In Z-80 bus request file:///d /pdf/px4/bus.html (1 of 2) :57:04

6 PX4 System Bus Port 27 CG - Protective Ground 28 CG - Protective Ground 29!RS Out System reset 30!M1 Out Z-80 machine cycle 1 31 AB0 Out Address 0 46 AB15 Out Address OFF Out Gate array control at power switching 48 DW Out Expansion D-RAM RF control signal 49 DCAS Out Expansion D-RAM RF control signal 50!RSI In Reset input NOTE: Use CMOS ICs for the circuit to be connected to this interface. NB: As i cant draw a line over the top of things easily in html, i have used the! symbol infront of a signals symbol to indicate it is an inverse one. All signal directions as viewed from PX-4 file:///d /pdf/px4/bus.html (2 of 2) :57:04

7 CP/M Builtin Commands CP/M Builtin Commands Paraphrased from the PX4 Operating Manual Control key commands Items in bold are keys to be pressed CTRL + C : Restarts CP/M by initiating a warm start CTRL + E : Forces the cursor to the next line of the screen for continued command line input. CTRL + H : Moves the cursor one space to the left in the same manner as the BS key. CTRL + I : Inputs a tab code (same as the TAB key) Turns on or off the printer echo function. When the printer echo function is turned on, data displayed on the LCD screen is output to the printer (or other device assigned to CTRL + P : LST:) each time the RETURN key is pressed. The printer echo function is turned on by pressing CTRL + P once, and is turned off when CTRL + P is pressed a second time. (Make sure the printer is connected properly before using this command.) CTRL + R : Redisplays the contents of the current command line. Momentarily stops processing currently being performed (same as the PAUSE key). CTRL + S : Processing can be resumed by inputting this command again. Cancels the current command line and moves the cursor to the next line on the screen for CTRL + U : input of a different command. CTRL + X : Erases the current command line and moves the cursor back to the beginning of the line. Terminates input from the keyboard (used in combination with certain CP/M transient CTRL + Z : commands). Built-in commands Key: d: - A drive letter filematch - an extact filename, or a wildcard match for files. Items such as [item] are optional, ones such as <item> are compulsary. DIR [d:][filematch] Display a list of files in the specified, or current drive. ERA [d:]<filematch> Erase specified files. filematch *.* can be used to match all files in the current drive. file:///d /pdf/px4/cpm.html (1 of 4) :57:04

8 CP/M Builtin Commands REN [d:]newname.ext = oldname.ext Change the name of a disk file from oldname.ext to newname.ext USER n [d:]filename.ext Save the specified n number of pages of the transient program area to disk under the specified file name. TYPE [d:]filename.ext Display the contents of the specified file on the display screen. Display is only meaningful if the file contents was ASCII text. USER n Switches to the specified user area in a disk drive. A user area is a physical area on a disk which has its own directory and which is managed seperately from the rest of the disk. Data cannot be read from or written to any user area other than that in which CP/M is currently operating. A disk can be divided up into a maximum of 16 user areas. Microcassette commands These commands only apply if a microcassette drive has been fitted. MOUNT Reads the tape directory REMOVE Writes the tape directory DIRINT Initialises the tape directory REWIND Rewinds the tape PLAY Outputs the content of the tape to the speaker FF Fast-forwards the tape ERASE Erases the tape STOP Stops the tape RESET Resets the tape counter to 0 Utility ROM Commands CONFIG PX-4 configuration tool. FILINK Transfer files through the serial port using the FILINK protocol. file:///d /pdf/px4/cpm.html (2 of 4) :57:04

9 CP/M Builtin Commands PIP [d:][newfile.ext]=[d:][filespec][<t> Copy files between peripherals whilst performing optional conversion <t>. Copy file from drive to drive: C> PIP H:=A:INFO.DAT Copy file to new name: C> PIP A:NEW.DAT=A:INFO.DAT Copy file to printer: C> PIP LST:=A:LETTER.TXT In addition, a range of parameters can be specified in square brackets [] immediately after the command to perform various translations during the copy. [B] Block Mode Transfer - Copy data in blocks, used with devices such as paper tape readers. [E] Echo to screen - copy to screen as well as destination [Pn] Form Feed - Insert a form feed (ASCII code 12, 0x0C) every n lines. [F] Supress form feeds [H] Hex format - only allow copying of intel HEX format files, terminate if match fails [I] Ignore NULL records - An alternative/extension to [H], ignores NULL (hex 00) records and ensures content is in Intel HEX format. [L] Lower case conversion - converts all upper case characters to lower case. [N] Number lines - Move text to start at column 9, and insert right justified line numbering in the space [N2] As [N] but zero pad the number to 6 digits [O] Object file transfer - would otherwise break on non ascii/hex files [R] Read System Files - read and copy system, sets [W] [Qstring^Z] Stop copying at specified string, ^Z refers to CTRL-Z [Sstring^Z] Start copying at specified string [Tn] TAB setting - move tab settings of file to columns, n, 1n, 2n, 3n, etc. [Gn] Transfer from user area n to current area [Dn] Truncate file at column n [U] Uppercase conversion - the opposite of [L] [V] Verify the copy [W] Write to a readonly file [Z] Zero parity setting - Set highest (parity) bit of every byte to 0, thus converting 8-bit ASCII to 7-bit STAT Display statistics on disk drives, or change device assignments. More detail to come file:///d /pdf/px4/cpm.html (3 of 4) :57:04

10 CP/M Builtin Commands TERM Terminal emulator program, talks to RS232 port. file:///d /pdf/px4/cpm.html (4 of 4) :57:04

11 PX4 Dip Switch PX4 DIP Switch Settings Dip switch located in ROM capsule compartment. LST: Device Name SW-5 SW-6 Serial Interface OFF OFF RS232C interface OFF ON Cartridge printer ON OFF Printer interface ON ON Keyboard type SW-1 SW-2 SW-3 SW-4 ASCII ON ON ON ON France OFF ON ON ON German ON OFF ON ON England OFF OFF ON ON Denmark ON ON OFF ON Sweden OFF ON OFF ON Italy ON OFF OFF ON Spain OFF OFF OFF ON Norway OFF ON ON OFF file:///d /pdf/px4/dip.html :57:05