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Содержание ZCB

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Страница 2: ...ZCB SINGLE BOARD CDMPtJI ER Revision 1 USERI S MANUAL Revision B June 11 1980 COP1 ight 1980 vector Graphic Inc 7200 0203 03 02...

Страница 3: ...except when an agreement to the contrary exists Revisions The date and reV1Slon of each page herein appears at the bottom of each page The revision letter such as A or B changes if the MANUAL has bee...

Страница 4: ...oard Computer is returned also at Buyer s expense to VECTOR GRAPHIC INC for such repair replacement or correction In performing any repair replacement or correction after expiration of the period set...

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Страница 6: ...stem how to use the board both in Vector Graphic and in other S lOO systems and how the board circuitry WJrks Each section is written at a uniform level of technical depth Perspective describes WHAT t...

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Страница 8: ...1lI 1 I II II II D II Cl II Ito II 1 6 II User s Guide 2 1 2 1 1 Standard Jumpering and what it does 2 1 2 2 CPU Section II II 0 e Ie 0 III II l1li II 0 0 e It eo tel llII 1lI l l II I I II II II II...

Страница 9: ...plers 2 l5 Connecting additional RS 232C handshaking lines 2 l5 Using the Parallel Ports 2 l8 Connecting Sprint 3 to ZCB 2 19 Connecting Vector MP to ZCB 2 19 2 9 Spare Chip and Patch areas 2 20 III T...

Страница 10: ...4 bytes RAM on board 3 EPRCM sockets on board up to 12K addressable none RAM 300ns EPRCM User selected 450 ns typical RAM 2114 static EPROM 2708 2716 2732 EOOOH E7FFH Auto boot on power on reset jumps...

Страница 11: ...atible with Vector Graphic EPRCM RAM Boards which generate phantom in response to Power on clear POe Jumper selectable on off Standard enabled Standard enabled can be disabled SPECIFICATIONS I O Capac...

Страница 12: ...e or double synch character can be progrannned 2 8 bit 2 4 bit can be programmed as 3 8 bit Uses an 8255 parallel I O controller chip Any increment of four from OOH to PFH Preset addresses are Port A...

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Страница 14: ...ard that was equipped with a power supply Sense data could arrive by an input parallel port be processed by the CPU section of the board and any data output control signals for instance could be camnu...

Страница 15: ...esses from DOH to FFH You specify the value of the addresses by jumper s as listed in Section 2 4 1 Thus the entire range of 256 possible port addresses may be accessed with the advanced decoding logi...

Страница 16: ...either 1200 bits second or 300 bits second you can write a program that enables the operator using the keyboard to change the canputer s rate of camnunication to match that of the Il Ddem at any given...

Страница 17: ...and 7 and there are handshaking lines that are used by canmunication terminal and canputer equipment to inform each other of their status lines 4 5 6 8 20 22 and a few others that are rarely used The...

Страница 18: ...re provided for the serial port to enable the 8251 Transmit Data and Receive Data lines to input or output at RS 232C voltage levels These receivers and drivers are already connected on the board requ...

Страница 19: ...Vector Graphic software product controls For example at the time of this writing any Extended Systems Monitor having option C enables a standard serial terminal to be plugged directly into the serial...

Страница 20: ...o that after an OUT instruction is executed the eight bits of data remain available to the external device until the computer changes it Input is NOT latched so that software must be written to sense...

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Страница 22: ...does the following 2708 EPROM s are selected for 2 PRCM sockets 2716 EPRCM selected for 1 PRCM socket EPRCM base address is EOOO lK on board merrory is addressed at FCOO Serial port is addressed at 04...

Страница 23: ...1 and 2 are jumpered an automatic wait state is inserted only after the Ml machine cycle If no pads are jumpered one automatic wait state is inserted on every bus cycle Options To insert one wait sta...

Страница 24: ...ge EPROM RAM memory addresses within the memory address block EOOOH to FFFFH use the following procedure 1 Subtract EOOOHfran the desired PRCM or RAM base address 2 Consult the lK column of the Relati...

Страница 25: ...jumpers as required 5 Cut away any pre existing jumpers as necessary 2708 Base Address Chart Addresses OOOOH IFFFH 200OH 3FFFH 4000H 5FFFH 6000H 7FFFH 8000H 9FFFH AOOOH BFFFH COOOH DFFFH EOOOH FFFFH A...

Страница 26: ...d the second pad number 5 SOlder jumper s as required 6 Cut away any previous jumpers as necessary For example let us say that we wish to use 3 2716 s on our ZCB board and want to use an auxiliary dis...

Страница 27: ...Consult the 4K column of the Relative Address Chart to find the appropriate Area F pad number 4 Consult the Area F EPRCM RAM Socket Pad Chart 5 Solder jumper s as required in Area F 6 Cut away any pre...

Страница 28: ...ther than the factory chosen standard are desired The port addresses for the one serial and three parallel ports are selected in such a manner as to coordinate with software that is being used The har...

Страница 29: ...AO CO EO 4 04 24 44 64 84 A4 C4 E4 5 08 28 48 68 88 A8 C8 E8 6 DC 2C 4C 6C 8C AC CC EC 7 10 30 50 70 90 BO DO FO 8 14 34 54 74 94 B4 D4 F4 9 18 38 58 78 98 B8 D8 F8 10 lC 3C 5C 7C 9C BC IX FC 1 Ib cha...

Страница 30: ...t the jumper between pads 3 and 2 and jumper I and 2 together Ibis will place the I O device address on the lower half of the address bus am the value of the contents of the accumulator on the upper h...

Страница 31: ...ISR Out Data Set Ready 13 4 Rl S In Request to Send 12 5 CTS Out Clear to Send 10 7 GND NA Ground Parallel I O Connector Pinout Chart I N C II N C 2I N C 3l PB7 2 GND 12 N C 22 PA7 32 PB6 3 PC2 13 PA...

Страница 32: ...described in the 8251 references given in Perspective All standard vector Graphic software unless otherwise documented use a clock factor of 16 and therefore the labeled baud rates are correct However...

Страница 33: ...ed inhibiting signals on any of the lines NOI E If you are writing your own software you will have to program the 8251 on the ZCB to control any handshaking lines required by the peripheral device If...

Страница 34: ...to cross lines 2 and 3 if connecting directly to a computer That instruction assumes you are connecting to a canputer channel configured as Data Terminal Equipment Also ignore the instruction to conn...

Страница 35: ...cannot accept any more characters and otherwise holds line 11 at 12 VDC Line 11 is called printer busy status Since incoming line 4 on the ZCB board is connected to Rl S connect RS 232C line 11 to lin...

Страница 36: ...le will work with any modern or coupler requiring only three lines Connect one end of the cable to the D8 25 of the ZCB Serial I O cable and the other end to the modern or coupler We strongly suggest...

Страница 37: ...r OCE 8 9 Reserved for Data set Testing 9 Reserved for Data Set Testing 10 Unassigned 11 Secondary Received Line Signal D t OCE 12 Secondary Clear to Send OCE 13 Secondary Transmitted Data IJI E 14 1...

Страница 38: ...2 VDC on some other line most often line 4 or line 20 Similarly a piece of Data Terminal Equipment connected to the board may require 12 VDC on some line other than 5 or 6 though this is rare You can...

Страница 39: ...nput of one of the driver circuits in a 1488 quad line driver It must then pass fran the output of this 1488 driver circuit to the RS 232C line To respond to an incoming RS 232C handshaking line it mu...

Страница 40: ...e the ZCB Sprint 3 interface board P N 42 3200 available from vector Graphic Inc Tb install 1 Plug interface card into top 34 pin parallel I O connector on the ZCB so that the bulk of the interface ca...

Страница 41: ...ch you may find useful to use 3 tri state 8097 buffers are available U35 in pin 12 out pin 11 controlled by U28 13 U36 in pin 14 out pin 13 controlled by CDSB U45 in pin 2 out pin 3 controlled by GND...

Страница 42: ...ress cycle to determine whether any of the on board PRCM or RAM is being addressed The jumpers in this seciton permit the use of lK 2K or 4K EPRCM The MEMORY block sheet 5 contains the on board PROM a...

Страница 43: ...i state buffers which feed into or are fed from the MOS on board data bus They convert the MaS level signals used on the on board data bus to TTL level signals used on the S lOO bus The MOS and TTL si...

Страница 44: ...ncy is selected by a DIP switch for each serial port and applied to the TxC and RxC pins of the 8251 The 8251 USART is designed to interface easily to an 8080 bus structure and the control signals RD...

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Страница 46: ...n made in the ZCB PRCM socket addressing as the boards are currently being shipped Ihe third socket U22 has been reconfigured to accept an 8316E302 type 2K ROM chip addressed at EOOOH Sockets U20 and...

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Страница 70: ...ard is tcwards the solder side of the ZCB board In the MZ it will aim tcwards the rear In the Vector 3 it will aim towards the front Section 2 3 EPIDM RAM Section Add the following paragraph at the bo...

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Страница 72: ...otice that there is a trace which leads from the pad to the large 5V trace at the left This also leads to pad 5 via an indirect route To cut the jumper from pad 7 to pad 5 of jumper area cut this trac...

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