HU196525B - Circuit arrangement of memory extension unit of an electronic write-work - Google Patents

Abstract

Field of the Invention The present invention relates to a switching arrangement for an electronic accelerator memory expansion unit, which is connected to its own memory (113) via an electronic decoder (11) CPU (111), and which is an electronic gear (11) with a control line (A), with a nameplate (D). , G) and data lines (I). The invention is characterized by the decoding and controlling logic (126) of the memory expansion unit (12) through the wires (B) and the drive unit (121) to the control wires (A), via additional wires (E) and the address drive unit (122) to the address wire. (D), via a further line (K) and a bidirectional data drive unit (124) to the data lines (I), a control line (C) to the decoder (112) of the electronic gearbox (11), and additional lines (F) to the memory expansion unit ( 12) is connected to its own memory block (125), while the memory block (125) via the additional lines (H) and the address drive unit (123) to the address lines (G), and via the additional two-way lines (J) and the bi-directional data drive unit (124) also connected to data lines (I). 196 525

Description

BACKGROUND OF THE INVENTION The present invention relates to a circuit arrangement for an electronic emergency power station memory expansion unit which can operate in conjunction with its own memory in order to better utilize its capabilities without altering its own structure.

Electronic printers (e.g., Robotron S / 6011 tip) generally include semiconductor-based writable / iron-out memory for storing small amounts of text (about 2 typed pages) 10 and serving the operating program, but not exceeding a few kbyte capacity.

However, there is a demand for more storage capacity than the above 15, which would otherwise be possible due to the construction of the electronic emergency power plant. However, given that the storage capacity of a Α / 4 form is approx. 1 to 2 bytes, the electronic emergency power station's own storage capacity is insufficient to store larger text.

While some of the electronic speeders (such as the Robotron S / 6011 already mentioned) have the option of memory expansion within their own 25 structures, this can only be done by a specialist, which increases the cost of memory expansion and risks of conversion or damage. causes disadvantages (eg loss of warranty) 30

Our goal is to create a qualitatively new opportunity in the capabilities of known electronic printers by expanding the storage capacity of the electronic speedboat to 34,000 characters, which can accommodate the longest letters in the office space, and cost-efficient memory expansion, expert assistance, or without dismantling the structure of the emergency station. 10

The invention is based on the discovery that known electronic emergency stations have on the one hand circuits (decoders, control signal generating circuits, etc.) that can be used to perform memory expansion, and on the other hand, electronic printers generally have a battery backup power supply thirdly, the service connectors of the electronic display units 50, which are otherwise used for servicing, can also be used to connect the memory expansion unit to them via the electronic emergency response system without dismantling it.

The object of the present invention is achieved by providing the circuitry of the present invention with an electronic speedboat memory accessory unit which is connected to its own memory via an addressable 6C encoder of an electronic speedboat CPU and which has electronic speedboat control wires, tag wires and data wires. marine expansion unit decoder and control logic 65 via wires and drive unit to control wires, additional wires and address drive unit to address line, additional wire and bidirectional drive unit to data wires, and control wires to electronic cure address decoder, and additional wires the memory expansion unit is connected to its own memory block, while the memory block is connected to the address wire through additional wires and the address drive unit, and further bidirectional wires and also connected via the adatvezetékre tirányú data driving unit.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described with reference to the drawings, in which: Figure 1 illustrates the structure of the memory expansion unit 12, its connection to the electrical emergency station 11, and its features relevant to the invention; shows its structure.

As shown in Fig. 1, the CPU 111 of the electronic speedboat 11 has control wires all to its own address decoder 112 and to the drive unit 121 of the memory expansion unit 12, to the address drive unit 122 of the memory expansion unit 12 and to its own address decoder 112. and address drive unit 123 of memory access unit 12 and bidirectional data drive unit 124 of memory access unit 12 with data I wires; the glitter decoder 112 of the electronic speed train 11 is connected to its own memory 113.

The decoding and control logic 126 of the memory expansion unit 12 is connected by wires B to drive unit 121, wires E to address drive unit 122, wire K to bidirectional data drive unit 124, wires F to memory block 125, and control wire C to cymbal decoder 112.

The data traffic between the electronic speedboat 11 and the memory block 125 is via the data lines I and J and the bidirectional data drive unit 124. Addressing of the memory block 125 is via the address lines G and the leads H and the address drive unit 123. The control (write control, read control, selection) of the memory block 125 is performed by the decoder and control logic 126 over the wires F and, accordingly, the decoder and control logic 126 also controls the bi-directional data drive unit 124 through the wire K. The decoding and control logic 126 receives the signals required for its operation via control wires A and wires B and drive unit 121, and address wires D and wires E and address drive unit 122. The decoding and control logic 126 is connected via control line C to the address code code 112 of the electronic emergency hub 11 to enable or disable the original memory 113 of the electronic emergency hatch 11 in accordance with the current program, which is the original program of the electronic emergency hive 11. , but the available memory is larger.

Figure 2 shows that the decoding and control logic 126 is made of selector logic 262 and

It consists of a decoder unit 261 where the selector logic 262 is connected to the wires B, the control wire C and the wires L to the decoder unit 261. The decoder 261 is connected to wires E, wire K and wires F.

The decoder unit 261 of the decoding and control logic 126 performs address decoding. Selector logic 262 controls decoder unit 261 through wires L and drives control line C, by means of which decoder and control logic 126 controls the original memory 113 of the electronic printout 11 as described above.

The present invention is a combination of known circuit elements such as those disclosed by Texas Instrument (USA) .The TTL Data Book Forum Design Engineers; 1981 'as follows:

124 Bidirectional Data Drive Unit SN 74LS245: 7-349 p.

122, 123 Drive Units SN 74LS244: pp. 6-83.

121 drive unit SN 74LS244: page 6-83.

126 Decoding and Control Logic SN 74132: 6-14 p.

262 selector logic

SN 74156: pp. 7-175.

An advantage of the present invention is that the connection of the memory expansion unit to the electronic emergency response system does not require the involvement of a specialist or service, and can be performed by the user himself, which further increases the cost-effectiveness of the solution.

Claims (2)

A circuit arrangement for an electronic emergency memory memory expansion unit, which is connected to its own memory (113) via a cimdecoder (112) via the CPU (111) of the electronic emergency vehicle (11) and which comprises electronic control (A) control lines (A), address lines (D, G) and data wires (I), characterized in that the decoding and control logic (126) of the memory expansion unit (12) is via wires (B) and drive unit (121) to control wires (A), additional wires (E). ) and via a paddle drive unit (122) to the address lines (D), an additional wire (K) and a bidirectional data drive unit (124) to the data leads (I), with a guide wire (C) to the glide decoder (112) of the electronic emergency vehicle (11), and further wires (F) connecting the memory expansion unit (12) to its own memory block (125); while the raemory block (125) is connected to the address lines (G) via additional wires (H) and the address drive unit (123) and also to the data lines (I) via the additional bidirectional wires (J) and bidirectional data drive unit (124). A circuit arrangement according to claim 1, characterized in that in the decoding and control logic (126) the selector logic (262) is connected by wires (L) to a decoding unit (261), and wherein the selector logic (262) is connected by wires (B). ) a drive unit (121), with a control line (C), to a glitter decoder (112) of the electronic printout device (11); while the decoding unit (261) is connected by wires (E) to the address drive unit (122), a further wire (! () to the bidirectional data drive unit (124), and further wires (F) to the memory block (125).