Pentagon_InstructionsAndAssembly2007-07-16 10

Pentagon_InstructionsAndAssembly2007-07-16 10

Pentagon 1024SL ver. 1.4
Instructions and assembly
All information, text and schematics compiled and gleaned from Zhabina Alexei
http://pentagon.nedopc.com/
http://pentagon1024.narod.ru/
Roughly translated from Russian to English using Google translator, Word translator and
Paralink translator by Andy Dansby ([email protected]).
PDF created by Andy Dansby.
Free P-Cad viewer available from http://www.altium.com/pcad/resources/downloads/
Good Luck assembling.
**note – please update this PDF if any new information comes out so this remains a
current information source.**
Page 1 ----------- Credits
Page 2 ----------- Table of Contents
Page 3 ----------- Pentagon 1024SL v1.4 Top component side
Page 4 ----------- Pentagon 1024SL v1.4 Bottom Solder Side
Page 5 ----------- Pentagon 1024SL v1.4 component placement top side
Page 6 ----------- Pentagon 1024SL v1.4 component placement solder side
Page 7 ----------- Photograph of Pentagon 1024SL v1.4
Page 8 ----------- Schematic of Pentagon 1024SL v1.4
Page 9 ----------- Schematic of Keyboard
Page 10 --------- Component placement
Page 11 to 17--- Pentagon 1024SL v1.4 working principle
Page 18 to 19--- IC list
Page 20 to 22--- Component list
Page 23 --------- List of included files
DD59КР531ИД14
DD54 555ЛИ1
DD57555ИЕ10
C7
C6
R34
R35
R33
R59
R46
R51
VD10
R47
DD56 555ЛЛ1
R90
C14
C15
C16
R17
R16
R15
R14
R13
C12
C13
C5
DD55 555ТМ2
R32
DD62 555ЛН2
DD61555АГ3
DD53555ТМ9
DD63 555ИР16
R36
VD2
VD3
VD4
VD5
VD6
VD7
VD8
VD9
DD45555КП11
DD13 555ЛА2
DD66 555ЛА2
PIC16C620 DD67 555ЛП5
R27
DD51 555ТМ2
DD52 555ТМ2
C4
DD39 555ЛН1
C10
VD17
DD46 555АП5
R45
DD68555КП11
ZQ3
DD65
VD12
DD58 КР1818ВГ93
R10
R26
VD11
R77
R78
R80
DA1 554СА3
R79
R30
C18
R31
DD15 555ЛП8
C17
DD35555ТМ9
DD22 555ЛЛ1
C8
VD15
R81
R2
C2
R73
R74
R86
R72
R29
R28
XP1
VD13
R83
DD29555КП12
R58
R57
R55
R52
VD14
DD43 555ЛИ1
C19
DD23 555ЛЛ1
VD18
C9
R70
R69 AY-3-8910
R43
DD44
R68
R71
R42
R37
R44
R38
R39
R40
R41
R25
DD2 555ТМ2
DD60 555ТМ2
DD69 555ИР23
DD16 555ЛЛ1
DD41 555ИР16
R18
DD42555КП11
DD38 555ИР23
DD37 555ИР23
DD14 27512
DD4
R92
R75
R76
R82
R88
R89
R6
Z-80
R87
R91
R19
R20
R21
R22
R23
R24
DD1 555ЛН1
DD30555КП12
DD31555КП12
DD32555КП12
DD47555КП12
DD40 555ИР16
DD36 555ИР23
DD33555КП11
R84
DD26555ТМ9
R64
R1
DD18 555ТМ2
DD17 555ТМ2
DD20 555ТМ2
DD10 555ЛА3
DD48 555ИР22
DD74 555ИР22
DD27 555ЛА3
DD78 555ИР22
DD3 555ИЕ10
DD5 555ЛП5
DD49555ТМ9
DD71 555АП5
DD70 555ЛЛ1
C1
R48
VD16
ZQ1
DD7 1533ТМ8
DD6 555ИЕ10
DD19 555ТМ2
DD8 561ИЕ10
DD9 555ЛИ1
DD12 555ЛИ3
R9
VD1
R8
DD11 555ЛЕ1
DD21 555ЛЛ1
R85
DD75 555ЛЕ1
DD64КР1533ИД7 DD50 555ЛЕ1
R12
R11
DD34 555ЛА3
DD76 555ЛН1
DD28555КП11
R49
XS3
DD73 555ЛЛ1
DD72 555ЛЛ1
XP2
DD77 555ЛИ1
DD24 555ЛА3
DD25 555ЛЕ1
R56
R54
R53
R7
R5
R3
R4
ZQ2
R50
R66
R67
R63
R61
R62
R60
R65
XS4
C3
8 Bit Spectrum - compatible computer “PENTAGON - 1024 SL” (Ver 1.4)
Working principle. Recommendations regarding assembling and configuration.
This document is intended for people, familiar by the base of digital computer technology
and constructing ZX Spectrum compatible machine. Commentary is given in compressed
form.
Fundamental technical characteristics (table 1).
central processor
KR1858VM1/3, Т34ВМ1, Z80A, B, H
Clock frequency of the processor
3.5 MHz
The involved volume of ROM
64 KB (27512)
Organization of ROM
Page, is projected in 0 Sector (0 addresses - #3fff). Input in shadow area of ROM It is
carried out by installation 3 Bat of port #1ffd
Sound
Sound Speaker, the sound coprocessor AY--3-8910 / YM2149F: 3 channels,
8 categories, the third channel (Effects) mixes up in resistor to a matrix with 1st and 2nd.
For obtaining the standard of stereo sound.
Graphic mode
256*192 pixels, 16 colors, 2 colors on same page, a mode Blinking (flash). Presence
"Transparent" video controller. The processor signal (WAIT) gives Opportunity to work
in a multicolor mode (2 or more colors to the same page).
Standard interfaces
Buffered Spectrum- the keyboard, Kempston joystick, Kempston mouse
Controller
Based on KR1818VG93 supercharged scheme without 556RT4 use.
Printer interface
ZX LPRINT III (it is compatible with CENTRONICS)
Connection of additional Peripherals
ZX-BUS (Nemo bus). It is compatible to the KAY line of computers.
Built-in program
Spectrum Standard Operating System (or 5.04T).
To the important to note additional special features can be credited the presence of a
protected mode; more detail about the operation can be read in the section “configuration
of the ports of input-output”.
Let’s examine the computer schematic circuit diagram briefly.
First, the clock generator on IC’s DD1.1 and DD1.2 synchronizes the processor occurring
in the machine. Microcircuits DD2, DD3, DD6, DD8, DD28 form a matrix of clock
frequencies synchronizing the Video controller. Signals, designated as 4, 5, 6, 7, 8, 12,
13, 14, 19, 20, 21, 22 are used for search of addresses in the Video memory. On DD7, the
shaper of the core system is collected from Clock pulses RAS, CAS, F. DD29, DD30,
D31, DD32, DD47 they multiplex addresses of the RAM. On IC’s DD5, DD9, DD12,
DD20 the order of management is collected by multiplexing memory. With RAS=0 the
older half of addresses, at RAS=1 the younger half of addresses. At 1A=0 there is a
sample of the basic RAM, at 1A=1 there is a sample of Video memory. On DD26, DD33,
DD49, DD60-2 and them to the binding. Switching pages of the banked RAM is
collected. DD26 and DD60.2 realize port of a configuration 7ffdh, DD49 – port
Configurations 1ffdh (work on record). On DD78 reading is made From port 7.
On DD78 a reading is made from port 7ffdh. Reading can be carried out only from the
TR-DOS ROM. More in detail is explained in section “Configuring ports”.
The decoder of port addresses for input-output is simple. No special comments are
required. It is collected in a logic matrix in the left lower bottom of the schematic.
Kempston mouse interface is assembled, based on IC DD65. Author of circuit insertion is
Vlad [Sorokin].
On the IC’s DD9, DD10, DD11, DD12, DD17, DD18, DD19 is the control assembly of
the video circuit. Video controller is assembled on the IC’s DD35, DD36, DD37, DD38,
DD40, DD41, DD42, DD43.
Attention! In the schematic of video controller, the error is committed. IC’s DD27.2
should be excluded from the diagram, and signal DSP given directly to the entrances of
IC DD43.
The ZX-BUS is realized by standard means. Elements DD70.3 and DD70.4 transfer on a
chain signal through IORQ in the basic part of the schematic.
The controller of the disk drive is collected under the standard scheme with the speed
being doubled. Special comments not needed.
3. Configuring ports on the Pentagon-1024SL ver.1.4
3.1. 7FFDh (to the record) (physical address %01xxxxxxxxxxxx01)
Bit 0, Bit 1, Bit 2 - a selection of a page in RAM for mode 128k.
Bit 3 - displaying of the screen (0 - from 4000h address, 1 - c addresses C00h the basic
page).
Bit 4 - a choice of page of ROM (a 0-BASIC-128, a 1-BASIC-48).
Bit 5 - a latch (0 - the port 7FFDh works normally, 1 - port and
All the functions which are carried out by it, are blocked (48K Mode).
The output from this mode is possible only by hardware dump.
ALL THIS DOES NOT CONCERN BIT 7 7FFDh, IT IS NOT BLOCKED DURING
BLOCKING OF PORT 7FFDh. THIS BIT IS BLOCKED DURING BLOCKING of Port
1FFDh. SO IT IS MADE FOR COMPATIBILITY FOR THE SPECTRUM-128К, I.E.
AT BLOCKING ADDITIONAL PORT OF THE CONFIGURATION 1FFDh TO
RECEIVE 128К MEMORIES, AS IN SPECTRUM-128К).
Bit 6 - it is not used.
Bit 7 - the first expansion of memory over 128k.
3.2. 7FFDh (for reading) (physical address %xxxxxxxxxxxxxx0x)
Reading from 7FFDh can be accomplished only from TR-DOS ROM. With this
deciphering of address the access to the port is possible only with the complete address,
there will otherwise be conflicts with AY8910. During reading we obtain 7FFDh
contained from the port, including bit 7. Bit 6 = 1 always, since. It is not used.
Reading from 7FFDh can be carried out only from the TR-DOS ROM. With this
deciphering of address the access to the port is possible only with the complete address,
there will otherwise be conflicts with AY8910. During reading we obtain 7FFDh
contained from the port, including bit 7. Bit 6 = 1 always, since. It is not used.
3.3. 1FFDh (only to the record) (physical address %00xxxxxxxxxxxx01)
Bit 0 - if 0 from 0000h address ROM is placed. If 1, ROM is disconnected and on its
place the RAM is connected.
Bit 1 - Management of the protected mode. If 0, protected, the mode is disconnected. If 1
the protected mode is included and opened. In addition, the port of configuration 1FFDh
and bit 7 ports 7FFDh become accessible only from the TR-DOS ROM.
Bit 2 - it is not used
Bit 3 - Management of shadow ROM. If 0 you get the usual Mode of ROM. If 1 there is a
connection to an additional (Free) page of ROM. This mode has the highest priority, i.e.
connection of an additional page of ROM occurs regardless of the fact which from pages
of ROM at present was at the given moment was connected.
Bit 4 - the Second category of expansion of memory over 128k.
Bit 5 - Blocking of port 1FFDh and bit 7 ports 7FFDh (latch). If 0 port 1FFDh and bit 7
ports 7FFDh function normally. If 1, port 1FFDh and bit 7 ports 7FFDh are blocked. An
output from this mode is only by hardware dump.
Bit 6 - it is not used
Bit 7 - the Third category of expansion of memory over 128k.
Notes:
When you turn on the computer or a hardware reset, there is a zeroing all
categories of ports of a configuration. The computer will start of the second pageROM (VB-128).
Purposes and categories of other ports of input-output correspond to the standards
accepted in ZX-Spectrum.
Increasing the memory to 1Mb is made similar KAY-1024 computers.
4. Recommendations for the assembly and configuration.
"Hardware should not work in principle and
in practice" Doctor Engineering. Science,
Professor VG Kartashev (Department of
Radio Engineering basis MEI)”
4.1. Assembly and start.
CLOSELY READ THROUGH THIS SECTION BEFORE TO TAKEING UP A
SOLDERING IRON!
Remarks to the printed-circuit-board of version 1.4:
1. Sockets ZX-BUS. Since I did not manage to find for sale sockets with 30
contacts, it was necessary to buy with 31 contacts. It means that the last contact is
not involved in each number. Be careful with installation of sockets and
installations of peripheral devices in them.
2. Sockets for the SIMM module are a similar situation. Since SIMMs contain 1
number on 30 contacts, and the only available part at the time contained 31 pins.
The last 31st is not connected, pay close attention.
3. On board there is one mistake (in the video box). See DD27.2 element.
First, the empty card must be checked for defects production of printed circuit boards
(micro-cracks, etc.). To do this best with a powerful light source (lamp power of 60 W100) and a magnifying glass.
All microcircuits simple logic, triggers, counters, registers is better to put series КР1533
(74ALS), as a last resort К555 (74LS). For the microcircuits contacting to trunks of the
address, data and control processor, this condition is of paramount importance. More in
detail about what series where are desirable for placing. See the applied table of
microcircuits.
It is better to do assembly in parts, instead of entirely (so it is more convenient). First
components of a processor part are established. You do not need to install the first phase
of the drive controller (with the exception of DD13, DD55 and their movement, or of
processing may not be able to work). You do not need to install elements of the controller
button, a signal WAIT temporarily connect with the chain of 5 V. You should not be in
the first phase of buffer elements connected to the bus and to work with peripheral
devices (DD69-screen printer, DD46-screen keyboard, DD45, DD68-port FE, AY8910 DD44, DD78-reading of 7FFDh).
After conducting the actions mentioned above, make your start.. The aim is to ensure
proper functioning of the processor. Before connected to the power supply board +5 V
(+12 V stores this stage do not need to connect, because this voltage controller needs only
to drive) you should carefully check up all chips and other elements, to test the quality of
parts (no "nose" and other defects rations). Power +5 V should be able to talk at least
1.5A and the IC’s will be protected from overloading.
Typically processing of the work would not begin. If it happened, then you would begin
the process of finding defects, and installation errors. Further action would require an
oscilloscope with a bandwidth of 10 MHz canvas (to 25). (Although, in principle, for a
good evaluation of the most nodes cleaned and oscilloscope with a bandwidth of 5 MHz
(eg S1-83-amazing thing), we will not have to do serious research, you can trace the flow
signals).
Testing is begun with the clock generator, and then we check the sync shaper circuits
DD7. Then we check the trigger DD2 and counters DD3, DD6, DD8. Further, check
DD9, DD10, DD11, DD12, DD17, DD18, and DD19 (the shaper of generating signals for
the video controller). And, at last, we check Video controller DD35, DD36, DD37,
DD38, DD40, DD41, DD42, and DD43.
Note in a word “checking” here and the checking further is implied the logic of the work
of elements, triggers, counters and registers, A, also signal tracing from the outputs of
some elements to the entrances of others.
Typical defects easily detected by the oscilloscope. It should be remembered that the
logical zero at the gate of TTL is usually 0.2 - 0.3 V, and the logical unit-order
3.8 [v]. The presence of intermediate state (1.5 - 2.5 c), as a rule, speaks about short
circuit of two Outputs of elements. The presence of stress less than 0.2 - 0.3 [v] speak
about shorting to earth (ground), while the presence of stress of more than 3.8 [v] can
speak about shorting the feed circuit of +5[V]. The exception lies with three states,
whose output or input circuits are pulled to the earth or to +5[V] and with the aid of the
resistors.
As a result of the above, checks on the screen to a raster (a solid box in the worst case) or
splash Sinclair Research (at best).
Consider the worst case. You have Frame (blank or with alternating stripes the width of
two labels. Note: The character of the brand strips SIMM module). If there is a strip
shows a failure of memory (SIMM module), or memory management unit. The
oscilloscope using test signals test all memory management, as well as a signal to bus and
bus data to SIMM module.
You have bands, but screen Sinclair Research appears. In most cases, this indicates that
the wiring in the bus or closing address, or data management layer. There is a need to
closely track all signals.
You get a screen Sinclair Research. Now it is possible to solder the diagram of the
computer wholly, not forgetting unsoldering installations, which temporarily linked chain
WAIT to 5 V.
If after assembly entire screen Sinclair Research ceases to appear, again we inspect the
above procedure.
4.2. Adjustment.
The processor part of a computer does not require adjustment. In
The majority of cases all adjustment is reduced to the adjustment of the controller of the
disk drive. A bad reading from the drive requires checking the ratings of С4, C10, R36.
If you want to use the audio interface (everyone does), it may be necessary to check the
values of R78, R79. .
If the sound does not mix properly for the AY output, check the values of R71, R74.
4.3. Before beginning of operation it is desirable to have 2 – 3 hours to burn in time on
the RAM TEST to assure reliability of the computer.
4.4. Enjoy and use, the computer is ready to work and play. If you have any problems
with the assembly and start, you may contact me by e-mail : [email protected]
(Zhabin Alexei, the author of project Pentagon-1024SL).
Table of Integrated Circuits. On the printed-circuit board it is best to place
the Integrated Circuits in the following series
DA1
DD1
DD2
DD3
DD4
DD5
DD6
DD7
DD8
DD9
DD10
DD11
DD12
DD13
DD14
DD15
DD16
DD17
DD18
DD19
DD20
DD21
DD22
DD23
DD24
DD25
DD26
DD27
DD28
DD29
DD30
DD31
DD32
DD33
DD34
DD35
DD36
DD37
DD38
DD39
DD40
DD41
DD42
К554СА3
?LM311N?LM319?LM219? This IC is in question
КР1533ЛН1, 74ALS04, К555ЛН1, 74LS04
КР1533ТМ2, 74ALS74
КР1533ИЕ10, 74ALS161, К555ИЕ10, 74LS161
КР1858ВМ1, КР1858МВ2, КР1858ВМ3, Z80, Z80A, Z80B
КР1533ЛП5, 74ALS86
КР1533ИЕ10, 74ALS161, К555ИЕ10, 74LS161
КР1533ТМ8, 74ALS175
561ИЕ10, CD4520
КР1533ЛИ1, 74ALS08
КР1533ЛА3, 74ALS00
КР1533ЛЕ1, 74ALS02
КР1533ЛИ3, 74ALS11
КР1533ЛА2, 74ALS30
27512, 27c512
КР1533ЛП8, 74ALS125
КР1533ЛЛ1, 74ALS32
КР1533ТМ2, 74ALS74
КР1533ТМ2, 74ALS74
КР1533ТМ2, 74ALS74
КР1533ТМ2, 74ALS74
КР1533ЛЛ1, 74ALS32
КР1533ЛЛ1, 74ALS32
КР1533ЛЛ1, 74ALS32
КР1533ЛА3, 74ALS00
КР1533ЛЕ1, 74ALS02
КР1533ТМ9, 74ALS174
КР1533ЛА3, 74ALS00
КР1533КП11, 74ALS257
КР1533КП12, 74ALS253
КР1533КП12, 74ALS253
КР1533КП12, 74ALS253
КР1533КП12, 74ALS253
КР1533КП11, 74ALS257
КР1533ЛА3, 74ALS00
КР1533ТМ9, 74ALS174
КР1533ИР23, 74ALS374
КР1533ИР23, 74ALS374
КР1533ИР23, 74ALS374
КР1533ЛН1, 74ALS04
К555ИР16, 74LS295, КР1533ИР16, 74ALS295
К555ИР16, 74LS295, КР1533ИР16, 74ALS295
КР1533КП11, 74ALS257
DD43
DD44
DD45
DD46
DD47
DD48
DD49
DD50
DD51
DD52
DD53
DD54
DD55
DD56
DD57
DD58
DD59
DD60
DD61
DD62
DD63
DD64
DD65
DD66
DD67
DD68
DD69
DD70
DD71
DD72
DD73
DD74
DD75
DD76
DD77
DD78
КР1533ЛИ1, 74ALS08
AY-3-8910, YM2149F
КР1533КП11, 74ALS257
КР1533АП5, 74ALS244
КР1533КП12, 74ALS253
КР1533ИР22, 74ALS373
КР1533ТМ9, 74ALS174
КР1533ЛЕ1, 74ALS02
К555ТМ2, 74LS74, КР1533ТМ2, 74ALS74
К555ТМ2, 74LS74, КР1533ТМ2, 74ALS74
КР1533ТМ9, 74ALS174
КР1533ЛИ1, 74ALS08
К555ТМ2, 74LS74, КР1533ТМ2, 74ALS74
КР1533ЛЛ1, 74ALS32
К555ИЕ10, 74LS161, КР1533ИЕ10, 74ALS161
КР1818ВГ93
КР531ИД14, 74S139
КР1533ТМ2, 74ALS74
К555АГ3, КР1533АГ3
К555ЛН2, 74LS05
К555ИР16, 74LS295, КР1533ИР16, 74ALS295
КР1533ИД7, 74ALS138
PIC16C620, PIC16C622
КР1533ЛА2, 74ALS30
КР1533ЛП5, 74ALS86
КР1533КП11, 74ALS257
КР1533ИР23, 74ALS374
КР1533ЛЛ1, 74ALS32
КР1533АП5, 74ALS244
КР1533ЛЛ1, 74ALS32
КР1533ЛЛ1, 74ALS32
КР1533ИР22, 74ALS373
КР1533ЛЕ1, 74ALS02
КР1533ЛН1, 74ALS04
КР1533ЛИ1, 74ALS08
КР1533ИР22, 74ALS373
PENTAGON-1024 SL Version 1.4.
The list of components for purchase (blocking condensers are not included in the list!).
1. Capacitors are electrolytic Of [k]50-35 or equivalent
10 F 16 C - 2 pieces
100 F 16 C - 1 pieces
2. Capacitors nonpolar [K]10-17[B] or analogous to are working the stress not less than
16 [v]
470 pF - 2 pieces
0.068 F - 1 pieces
300 pF - 4 pieces
0.1 F - 6 pieces
27 pF - 2 pieces
3. Resistors [MLT] of 0.125 W (or [S]2-23, [S]2-33 with a power of 0.125 W or 0.25 W)
470 Ohm - 20 pieces
10 K-Ohm (possible 9.1 K-Ohm) - 20 pieces
3.3 K-Ohm - 2 pieces
100 K-Ohm - 2 pieces
36 K-Ohm - 2 pieces
6.8 K-Ohm (possible 5.6 K-Ohm, 5.1 K-Ohm) - 15 pieces
3 M - 2 pieces
1 K-Ohm - 20 pieces
22 K-Ohm - 2 pieces
330 Ohm - 5 pieces
2 K-Ohm - 3 pieces
200 Ohm - 5 pieces
750 Ohm - 2 pieces
27 Ohm - 8 pieces
3 K-Ohm - 2 pieces
120 K-Ohm - 2 pieces
680 Ohm - 8 pieces
4. Diodes [KD]522[B] ([KD]522[A], 1N4148) - 20 pieces
5. Zener Diode [KS]156[A] in the glass housing (possible with another letter) - 2 pieces
6. Transistors [KT]315[B] (possible with another letter) - 5 pieces
7. Resonators are quartz (any type, better the cheapest)
14 MHz - 2 pieces
8 MHz - 1 pieces
8. Integrated Circuits
27512 (27[s]512, possible once programmed) - 1 pieces
[KR]1858[VM]1 (or [KR]1858[VM]2, [KR]1858[VM]3, [T]34[VM]1, Z80, Z80A) in the
housing DIP40 - 1 pieces
[K]554[SA]3 - 1 pieces
[KR]1533[LN]1 (74ALS04) - 3 pieces
[KR]1533[TM]2 (74ALS74) - 6 pieces
[K]555[TM]2 (74LS74, possible [KR]1533[TM]2, 74ALS74) - 3 pieces
[K]555[IE]10 (74LS161, [KR]1533[IE]10, 74ALS161) - 3 pieces
[K]561[IE]10 (CD4520) - 1 pieces
[KR]1533[LP]5 (74ALS86) - 2 pieces
KR]1533[TM]8 (74ALS175) - 1 pieces
[KR]1533[LI]1 (74ALS08) - 4 pieces
[KR]1533[LA]3 (74ALS00) - 4 pieces
[KR]1533[LE]1 (74ALS02) - 4 pieces
[KR]1533[LI]3 (74ALS11) - 1 pieces
[KR]1533[LA]2 (74ALS30) - 2 pieces
[KR]1533[LP]8 (74ALS125) - 1 pieces
[KR]1533[LL]1 (74ALS32) - 8 pieces
[KR]1533[TM]9 (74ALS174) - 4 pieces
[KR]1533[KP]11 (74ALS257) - 4 pieces
[KR]1533[KP]12 (74ALS253) - 5 pieces
[KR]1533[IR]23 (74ALS374) - 4 pieces
[KR]1533[IR]22 (74ALS373) - 3 pieces
[K]555[IR]16 (74LS295, possible [KR]1533[IR]16, 74ALS295) - 3 pieces
[KR]1533[AP]5 (74ALS244) - 2 pieces
[KR]531[ID]14 (74S139) - 2 pieces
[K]555[AG]3 (possible [KR]1533[AG]3) - 1 pieces
[K]555[LN]2 (74LS05) - 1 pieces
[KR]1533[ID]7 (74ALS138) - 1 pieces
Socket DIP40 - 3 pieces
socket DIP28 - 1 pieces
socket DIP18 - 1 pieces
9. Joints
IDC34MS - 3 pieces (fork of 34pin step 2.54 mm)
IDC34F of -2 pieces (mating part (under the train) to IDC34MS)
SL-62 (rosette of 2 rows on 31 contact, step 2.54 mm) - 2 pieces
Rosette DB-25 for soldering - 1 pieces
Rosette DB-15 for soldering - 1 pieces
DPS-9M (fork of 9pin for soldering) - 1 pieces
Rosette SG -7 (with two openings for fastening, NOT FOR SOLDERING TO THE PAY)
- 1 pieces
Rosette SG -5 (with two openings for fastening, NOT FOR SOLDERING TO THE PAY)
- 2 pieces
Train of 34 wires (computer) - 1 meter
The file, pentagon.rom is a ROM image (27c512) for the PENTAGON. (The original version)
contains. SOS-128, SOS-48, TR-DOS 5.03.
The file mouse.hex the insertion of microcontroller PIC16c620 (osc=hs, wdt=off) for interface
Kempston mouse. Author is Vlad Sorokin)