Difference between revisions of "LB Backplane Computer"

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−
== Land Boards Backplane Computer ==
+
[[FILE:LB-RETRO-SET_P1090758-720px.jpg]]
  
 
== Features ==
 
== Features ==
  
 +
* Classic Computers design
 +
** Intended for multiple CPU support
 +
** Not RC2014 compatible (hardware)
 
* 24-bit address support
 
* 24-bit address support
−
* 8 bit data
+
** Want to build a 68008 CPU card
−
* Backplane, CPU, Memory, I/O cards
+
* 8-bit data
 +
* [[LB_Backplane_Computer#LB-BKPLANE-01_-_Backplane|6-slot Backplane]]
 +
* CPUs
 +
** [[LB_Backplane_Computer#LB-6809-01|MC6809]]
 +
** [[LB_Backplane_Computer#LB-6802-01|MC6802]]
 +
** [[LB_Backplane_Computer#LB-65CXX-01|6502]]
 +
** [[LB_Backplane_Computer#LB-Z80-01|Z80]]
 +
* Memory cards
 +
** [[LB_Backplane_Computer#LB-MEM-02|16KB EPROM, 32KB RAM card]]
 +
** [[LB_Backplane_Computer#LB-MEM-04|16/32/64/128/256/512KB/1MB EPROM, 32/128/512KB RAM card]]
 +
** [[LB_Backplane_Computer#LB-MEM-03|16/32/64/128/256/512KB/1MB EPROM in ZIF socket]]
 +
* I/O cards
 +
** [[LB_Backplane_Computer#LB-68B50-02|ACIA]]
 +
** Smart I/O
 +
* Prototyping cards
 +
** [[LB_Backplane_Computer#LB-BKOUT-01_-_Breakout_Board|Breakout board]] V1
 +
** [[LB_Backplane_Computer#LB-BKOUT-02_-_Breadboard.2FBreakout_Board|Breakout board]] V2
 +
* [https://hackaday.io/project/198306-dream-computer-circa-1977 Hackaday page]
  
−
=== Backplane ===
+
=== LB-BKPLANE-01 - Backplane ===
  
−
[[file:LB-BKPLANE-01_FRONT-3D.png]]
+
[[file:LB-BKPLANE-01_P1656-720px.jpg]]
  
 +
* [[LB-BKPLANE-01]]
 
* 6 slot backplane
 
* 6 slot backplane
 
* 64 connections
 
* 64 connections
Line 20: Line 41:
 
* 100x100mm card
 
* 100x100mm card
 
* (6) 4-40 mounting holes
 
* (6) 4-40 mounting holes
 +
 +
==== Backplane Pinout ====
 +
 +
{| class="wikitable"
 +
! Pin
 +
! LBMEM
 +
! LBZ80
 +
! LB65C816
 +
! LBLOGIC
 +
|-
 +
| 1
 +
| VCC
 +
| VCC
 +
| VCC
 +
| VCC
 +
|-
 +
| 2
 +
| VCC
 +
| VCC
 +
| VCC
 +
| VCC
 +
|-
 +
| 3
 +
| CPUA22
 +
| CPUA22
 +
| CPUA22
 +
| P2[6]
 +
|-
 +
| 4
 +
| CPUA23
 +
| CPUA23
 +
| CPUA23
 +
| P2[7]
 +
|-
 +
| 5
 +
| CPUA20
 +
| CPUA20
 +
| CPUA20
 +
| P2[4]
 +
|-
 +
| 6
 +
| CPUA21
 +
| CPUA21
 +
| CPUA21
 +
| P2[5]
 +
|-
 +
| 7
 +
| CPUA18
 +
| CPUA18
 +
| CPUA18
 +
| P2[2]
 +
|-
 +
| 8
 +
| CPUA19
 +
| CPUA19
 +
| CPUA19
 +
| P2[3]
 +
|-
 +
| 9
 +
| CPUA16
 +
| CPUA16
 +
| CPUA16
 +
| P2[0]
 +
|-
 +
| 10
 +
| CPUA17
 +
| CPUA17
 +
| CPUA17
 +
| P2[1]
 +
|-
 +
| 11
 +
| CPUA14
 +
| CPUA14
 +
| CPUA14
 +
| P4[6]
 +
|-
 +
| 12
 +
| CPUA15
 +
| CPUA15
 +
| CPUA15
 +
| P4[7]
 +
|-
 +
| 13
 +
| CPUA12
 +
| CPUA12
 +
| CPUA12
 +
| P4[4]
 +
|-
 +
| 14
 +
| CPUA13
 +
| CPUA13
 +
| CPUA13
 +
| P4[5]
 +
|-
 +
| 15
 +
| CPUA10
 +
| CPUA10
 +
| CPUA10
 +
| P4[2]
 +
|-
 +
| 16
 +
| CPUA11
 +
| CPUA11
 +
| CPUA11
 +
| P4[3]
 +
|-
 +
| 17
 +
| CPUA08
 +
| CPUA8
 +
| CPUA8
 +
| P4[0]
 +
|-
 +
| 18
 +
| CPUA09
 +
| CPUA9
 +
| CPUA9
 +
| P4[1]
 +
|-
 +
| 19
 +
| CPUA06
 +
| CPUA6
 +
| CPUA6
 +
| P0[6]
 +
|-
 +
| 20
 +
| CPUA07
 +
| CPUA7
 +
| CPUA7
 +
| P0[7]
 +
|-
 +
| 21
 +
| CPUA04
 +
| CPUA4
 +
| CPUA4
 +
| P0[4]
 +
|-
 +
| 22
 +
| CPUA05
 +
| CPUA5
 +
| CPUA5
 +
| P0[5]
 +
|-
 +
| 23
 +
| CPUA02
 +
| CPUA2
 +
| CPUA2
 +
| P0[2]
 +
|-
 +
| 24
 +
| CPUA03
 +
| CPUA3
 +
| CPUA3
 +
| P0[3]
 +
|-
 +
| 25
 +
| CPUA00
 +
| CPUA0
 +
| CPUA0
 +
| P0[0]
 +
|-
 +
| 26
 +
| CPUA01
 +
| CPUA1
 +
| CPUA1
 +
| P0[1]
 +
|-
 +
| 27
 +
| CPUD0
 +
| CPUD0
 +
| CPUD0
 +
| P12[0]
 +
|-
 +
| 28
 +
| CPUD7
 +
| CPUD7
 +
| CPUD7
 +
| P12[7]
 +
|-
 +
| 29
 +
| CPUD1
 +
| CPUD1
 +
| CPUD1
 +
| P12[1]
 +
|-
 +
| 30
 +
| CPUD6
 +
| CPUD6
 +
| CPUD6
 +
| P12[6]
 +
|-
 +
| 31
 +
| CPUD2
 +
| CPUD2
 +
| CPUD2
 +
| P12[2]
 +
|-
 +
| 32
 +
| CPUD5
 +
| CPUD5
 +
| CPUD5
 +
| P12[5]
 +
|-
 +
| 33
 +
| CPUD3
 +
| CPUD3
 +
| CPUD3
 +
| P12[3]
 +
|-
 +
| 34
 +
| CPUD4
 +
| CPUD4
 +
| CPUD4
 +
| P12[4]
 +
|-
 +
| 35
 +
| MEMRD*
 +
| N/A
 +
| N/A
 +
| P3[7]
 +
|-
 +
| 36
 +
| RAMSEL*
 +
| N/A
 +
| N/A
 +
| P3[6]
 +
|-
 +
| 37
 +
| IOCS*
 +
| N/A
 +
| N/A
 +
| P3[4]
 +
|-
 +
| 38
 +
| ROMSEL*
 +
| N/A
 +
| N/A
 +
| P3[5]
 +
|-
 +
| 39
 +
| GND
 +
| GND
 +
| GND
 +
| GND
 +
|-
 +
| 40
 +
| GND
 +
| GND
 +
| GND
 +
| GND
 +
|-
 +
| 41
 +
| N/A
 +
| CPUCLK
 +
| CPUCLK
 +
| P3[3]
 +
|-
 +
| 42
 +
| N/A
 +
| RFSH
 +
| VPA
 +
| P3[2]
 +
|-
 +
| 43
 +
| N/A
 +
| INT*
 +
| IRQB*
 +
| P3[1]
 +
|-
 +
| 44
 +
| N/A
 +
| M1*
 +
| VPB
 +
| P3[0]
 +
|-
 +
| 45
 +
| N/A
 +
| NMI*
 +
| NMIB*
 +
| P5[7]
 +
|-
 +
| 46
 +
| N/A
 +
| CPURST*
 +
| CPURESB*
 +
| P5[6]
 +
|-
 +
| 47
 +
| N/A
 +
| HALT*
 +
| ABORT*
 +
| P5[5]
 +
|-
 +
| 48
 +
| N/A
 +
| BUSRQ*
 +
| MLB
 +
| P5[4]
 +
|-
 +
| 49
 +
| N/A
 +
| MREQ*
 +
| VDA
 +
| P1[7]
 +
|-
 +
| 50
 +
| N/A
 +
| WAIT*
 +
| RDY
 +
| P1[6]
 +
|-
 +
| 51
 +
| N/A
 +
| IORQ*
 +
| IRQB*
 +
| P1[5]
 +
|-
 +
| 52
 +
| N/A
 +
| BUSACK*
 +
| CPUE
 +
| P1[4]
 +
|-
 +
| 53
 +
| N/A
 +
| CPURD*
 +
| CPUMX
 +
| P5[3]
 +
|-
 +
| 54
 +
| N/A
 +
| CPUWR*
 +
| RWB
 +
| P5[2]
 +
|-
 +
| 55
 +
| N/A
 +
| N/A
 +
| N/A
 +
| N/A
 +
|-
 +
| 56
 +
| N/A
 +
| N/A
 +
| N/A
 +
| N/A
 +
|-
 +
| 57
 +
| N/A
 +
| N/A
 +
| N/A
 +
| N/A
 +
|-
 +
| 58
 +
| N/A
 +
| N/A
 +
| N/A
 +
| N/A
 +
|-
 +
| 59
 +
| N/A
 +
| N/A
 +
| N/A
 +
| N/A
 +
|-
 +
| 60
 +
| N/A
 +
| N/A
 +
| N/A
 +
| N/A
 +
|-
 +
| 61
 +
| N/A
 +
| N/A
 +
| N/A
 +
| N/A
 +
|-
 +
| 62
 +
| N/A
 +
| N/A
 +
| N/A
 +
| N/A
 +
|-
 +
| 63
 +
| N/A
 +
| N/A
 +
| N/A
 +
| N/A
 +
|-
 +
| 64
 +
| N/A
 +
| N/A
 +
| N/A
 +
| N/A
 +
|-
 +
|}
  
 
=== LB-65CXX-01 ===
 
=== LB-65CXX-01 ===
  
−
[[file:LB-65C816-01_FRONT_REV1(BLK).png]]
+
[[file:LB-65CXX-01_P1655-720px.jpg]]
  
 +
* [[LB-65CXX-01]]
 
* 65C02 or 65C816 CPU
 
* 65C02 or 65C816 CPU
 
* Oscillator on card
 
* Oscillator on card
 
* Reset switch/power monitor
 
* Reset switch/power monitor
−
* Decoder PLD
+
* Address decoder PLD drives RAM/ROM/IO chip selects
 +
* 100x50mm card
 +
 
 +
=== LB-6802-01 ===
 +
 
 +
[[file:LB-6802-01_P1670-720PX.jpg]]
 +
 
 +
* [[LB-6802-01]]
 +
* 68N02 CPU
 +
* Reset switch/power monitor
 +
* Address decoder PLD drives RAM/ROM/IO chip selects
 
* 100x50mm card
 
* 100x50mm card
  
 
=== LB-6809-01 ===
 
=== LB-6809-01 ===
  
−
[[file:LB-6809-01_FRONT_REV1(BLK).png]]
+
[[file:LB-6809-01_P1090746_Rev2-720px.jpg]]
  
−
* 65C02 or 65C816 CPU
+
* [[LB-6809-01]]
−
* Oscillator on card
+
* 68B09 CPU
 
* Reset switch/power monitor
 
* Reset switch/power monitor
−
* Decoder PLD
+
* Address decoder PLD drives RAM/ROM/IO chip selects
 
* 100x50mm card
 
* 100x50mm card
  
 
=== LB-Z80-01 ===
 
=== LB-Z80-01 ===
  
−
[[file:LB-Z80-01_FRONT-3D.png]]
+
[[file:LB-Z80-01_P1658-720px.jpg]]
  
 +
* [[LB-Z80-01]]
 
* Z80 CPU
 
* Z80 CPU
 
* Oscillator on card
 
* Oscillator on card
 
* Reset switch/power monitor
 
* Reset switch/power monitor
−
* Decoder PLD
+
* Address decoder PLD drives RAM/ROM/IO chip selects
 
* 100x50mm card
 
* 100x50mm card
  
Line 55: Line 483:
 
[[file:LB-6850-01_FRONT_REV1(BLK).png]]
 
[[file:LB-6850-01_FRONT_REV1(BLK).png]]
  
 +
* [[LB-68B50-01]]
 
* 68B50 UART
 
* 68B50 UART
 
* Baud Rate Clock (38.4k baud oscillator)
 
* Baud Rate Clock (38.4k baud oscillator)
Line 61: Line 490:
 
* 8-bit parallel port expander
 
* 8-bit parallel port expander
 
** SD card
 
** SD card
 +
* 100x50mm card
 +
 +
=== LB-68B50-02 ===
 +
 +
[[file:LB-6850-02_P1090749-720px.jpg]]
 +
 +
* [[LB-68B50-02]]
 +
* 68B50 UART
 +
* Baud Rate Clock (38.4k baud oscillator)
 +
* Control lines from PLD allow multiple Serial I/O cards
 
* 100x50mm card
 
* 100x50mm card
  
Line 67: Line 506:
 
[[file:LB-Logic-01_FRONT_REV1(BLK).png]]
 
[[file:LB-Logic-01_FRONT_REV1(BLK).png]]
  
 +
* [[LB-LOGIC-01]]
 
* Not required for BASIC computer
 
* Not required for BASIC computer
 
* PSoC 5LP CPU
 
* PSoC 5LP CPU
Line 78: Line 518:
 
=== LB-MEM-02 ===
 
=== LB-MEM-02 ===
  
−
[[file:LB-MEM-02_REV1-FRONT-3D.png]]
+
[[file:LB-MEM-02_P1090747-720px.jpg]]
  
−
* Up to 1MB
+
* [[LB-MEM-02]]
−
* Supports smaller SRAMs
+
* 32KB SRAM
 +
** Supports smaller (28-pin) SRAMs
 
** Headers to jump for smaller cards
 
** Headers to jump for smaller cards
 +
* EPROM (up to 64 KB)
 
* Connects to Address/Data and Memory control lines
 
* Connects to Address/Data and Memory control lines
 
* 50x75mm card
 
* 50x75mm card
Line 88: Line 530:
 
=== LB-MEM-03 ===
 
=== LB-MEM-03 ===
  
−
[[file:LB-MEM-03_REV1-FRONT-3D.png]]
+
[[file:LB-MEM-03_P1090751-720px.jpg]]
  
 +
* [[LB-MEM-03]]
 
* EPROM/EEPROM card
 
* EPROM/EEPROM card
 
* 32-pin ZIF socket
 
* 32-pin ZIF socket
Line 97: Line 540:
 
* Connects to Address/Data and Memory control lines
 
* Connects to Address/Data and Memory control lines
 
* 50x75mm card
 
* 50x75mm card
 +
 +
=== LB-MEM-04 ===
 +
 +
[[file:LB-MEM-04_REV1-FRONT-3D.png]]
 +
 +
* [[LB-MEM-04]]
 +
* 32/128KB/512KB SRAM
 +
** Supports 32 and 28 pin SRAMs
 +
** Headers to jump for smaller cards
 +
* EPROM (up to 64 KB)
 +
* Connects to Address/Data and Memory control lines
 +
* 50x75mm card
 +
 +
=== LB-BKOUT-01 - Breakout Board ===
 +
 +
[[file:LB-BKOUT_FRONT_3D.png]]
 +
 +
* [[LB-BKOUT-01]]
 +
* Breakout all bus lines
 +
* PWR/GND bus down the middle
 +
* Can be used as NOP tester
 +
* 84 x 28mm
 +
 +
=== LB-BKOUT-02 - Breadboard/Breakout Board ===
 +
 +
[[file:LB-BKOUT-02_FRONT_3D.png]]
 +
 +
* [[LB-BKOUT-02]]
 +
* Breakout all bus lines around breadboard area
 +
* PWR/GND bus down the middle
 +
* 3.3 x 1.7 in
 +
 +
==== LB-BKOUT-02 - Configured for Logic Analyzer ====
 +
 +
[[file:LB-BKOUT-02_P1090753-720px.jpg]]
 +
 +
* Right angle headers for all pins
 +
* Connect to Logic Analyzer
 +
 +
=== Mini360 Adapter Board ===
 +
 +
[[file:Mini360_P1090754-720px.jpg]]
 +
 +
* [[Mini360_Adapter_Board]]
 +
* Adjustable output voltage level
 +
** Adjust for 5V output voltage nominal
 +
*** 5.1V is a good starting point
 +
** '''Adjust before installing onto backplane'''
 +
** Pot is not easy to adjust
 +
* Wide range of input voltage up to 23V
 +
** About 1-2V higher (minimum) than output voltage
 +
** I used 9V, 1A wall wart
 +
** Works well with 9 or 12V DC wall warts
 +
* 2x10 header for power distribution
 +
** Male pins plug into 2x8 female pins on [[LB-BKPLANE-01]] card
 +
** Other pins can be used for attaching scope ground or other peripheral cards
 +
* (2) 4-40 mounting holes
 +
 +
== Typical Parts ==
 +
 +
{| class="wikitable"
 +
! Mouser #
 +
! Mfr. #
 +
! Manufacturer
 +
! Customer #
 +
! Description
 +
! Price (USD)
 +
|-
 +
| 774-MXO45-2C-1M0000
 +
| MXO45-2C-1M0000
 +
| CTS
 +
| OSC_1.0MHz
 +
| Standard Clock Oscillators 1.000000 MHZ Hybrid Circuit
 +
| $1.61
 +
|-
 +
| 774-MXO45-3C-1.8
 +
| MXO45-3C-1M8432
 +
| CTS
 +
| OSC_1.8MHz
 +
| Standard Clock Oscillators 1.84320 MHz
 +
| $3.25
 +
|-
 +
| 774-MXO45-3C-2.0
 +
| MXO45-3C-2M0000
 +
| CTS
 +
| OSC_2.0MHz
 +
| Standard Clock Oscillators 2.00000 MHz
 +
| $2.27
 +
|-
 +
| 556-AF16V8B15PU
 +
| ATF16V8B-15PU
 +
| Microchip
 +
| PLD
 +
| EEPLD - Electronically Erasable Programmable Logic Devices
 +
15 ns 20 I/O Pins 8 macrocells 8 reg
 +
| $1.22
 +
|-
 +
| 700-DS1813-5T&R
 +
| DS1813-5+T&R
 +
| Analog Devices Inc.
 +
| PWR_MON
 +
| Supervisory Circuits 5V EconoReset with Pushbutton
 +
| $3.70
 +
|-
 +
| 535-1107741
 +
| 1107741
 +
| Aries Electronics
 +
| SKT_04_DIP
 +
| IC & Component Sockets OSCILLATOR FULL 4PIN
 +
| $0.991
 +
|-
 +
| 575-199320
 +
| 110-99-320-41-001000
 +
| Mill-Max
 +
| SKT_20_DIP
 +
| IC & Component Sockets 20P TIN PIN TIN CONT
 +
| $1.17
 +
|-
 +
| 575-11044628
 +
| 110-44-628-41-001000
 +
| Mill-Max
 +
| SKT_28_DIP
 +
| IC & Component Sockets 28P TIN PIN TIN CONT
 +
| $1.63
 +
|-
 +
| 575-1144632
 +
| 110-44-632-41-001000
 +
| Mill-Max
 +
| SKT_32_DIP
 +
| IC & Component Sockets 32P TIN PIN TIN CONT
 +
| $2.27
 +
|-
 +
| 575-11044640
 +
| 110-44-640-41-001000
 +
| Mill-Max
 +
| SKT_40_DIP
 +
| IC & Component Sockets 40P TIN PIN TIN CONT
 +
| $2.61
 +
|-
 +
| 517-4848-6000-CP
 +
| 4848-6000-CP
 +
| 3M
 +
| SKT_48_DIP
 +
| IC & Component Sockets 48P DUAL WIPE DIPSKT
 +
| $1.23
 +
|-
 +
| 652-4610X-1LF-10K
 +
| 4610X-101-103LF
 +
| Bourns
 +
|
 +
| Resistor Networks & Arrays 10pins 10Kohms Bussed
 +
| $0.214
 +
|-
 +
|}
 +
 +
* [https://www.ebay.com/itm/194051826047 2X40 Headers]
 +
* '''[https://www.mouser.com/ProductDetail/Microchip-Technology/MCP100-485DI-TO?qs=iPotdFlfUx9QWyjlLzLl4w%3D%3D MCP100-485DI/TO] is a much less expensive part than the DS1813-T (I have not tested it)''' and it only monitor voltage (can't install reset switch)

Latest revision as of 14:30, 16 October 2024

LB-RETRO-SET P1090758-720px.jpg

Features

LB-BKPLANE-01 - Backplane

LB-BKPLANE-01 P1656-720px.jpg

  • LB-BKPLANE-01
  • 6 slot backplane
  • 64 connections
    • 2 power, 2 ground pins
    • 10 expansion pins
    • 0.6" slot spacine
  • Optional "light" terminators
  • Power connections via 2x8 header
  • 100x100mm card
  • (6) 4-40 mounting holes

Backplane Pinout

Pin LBMEM LBZ80 LB65C816 LBLOGIC
1 VCC VCC VCC VCC
2 VCC VCC VCC VCC
3 CPUA22 CPUA22 CPUA22 P2[6]
4 CPUA23 CPUA23 CPUA23 P2[7]
5 CPUA20 CPUA20 CPUA20 P2[4]
6 CPUA21 CPUA21 CPUA21 P2[5]
7 CPUA18 CPUA18 CPUA18 P2[2]
8 CPUA19 CPUA19 CPUA19 P2[3]
9 CPUA16 CPUA16 CPUA16 P2[0]
10 CPUA17 CPUA17 CPUA17 P2[1]
11 CPUA14 CPUA14 CPUA14 P4[6]
12 CPUA15 CPUA15 CPUA15 P4[7]
13 CPUA12 CPUA12 CPUA12 P4[4]
14 CPUA13 CPUA13 CPUA13 P4[5]
15 CPUA10 CPUA10 CPUA10 P4[2]
16 CPUA11 CPUA11 CPUA11 P4[3]
17 CPUA08 CPUA8 CPUA8 P4[0]
18 CPUA09 CPUA9 CPUA9 P4[1]
19 CPUA06 CPUA6 CPUA6 P0[6]
20 CPUA07 CPUA7 CPUA7 P0[7]
21 CPUA04 CPUA4 CPUA4 P0[4]
22 CPUA05 CPUA5 CPUA5 P0[5]
23 CPUA02 CPUA2 CPUA2 P0[2]
24 CPUA03 CPUA3 CPUA3 P0[3]
25 CPUA00 CPUA0 CPUA0 P0[0]
26 CPUA01 CPUA1 CPUA1 P0[1]
27 CPUD0 CPUD0 CPUD0 P12[0]
28 CPUD7 CPUD7 CPUD7 P12[7]
29 CPUD1 CPUD1 CPUD1 P12[1]
30 CPUD6 CPUD6 CPUD6 P12[6]
31 CPUD2 CPUD2 CPUD2 P12[2]
32 CPUD5 CPUD5 CPUD5 P12[5]
33 CPUD3 CPUD3 CPUD3 P12[3]
34 CPUD4 CPUD4 CPUD4 P12[4]
35 MEMRD* N/A N/A P3[7]
36 RAMSEL* N/A N/A P3[6]
37 IOCS* N/A N/A P3[4]
38 ROMSEL* N/A N/A P3[5]
39 GND GND GND GND
40 GND GND GND GND
41 N/A CPUCLK CPUCLK P3[3]
42 N/A RFSH VPA P3[2]
43 N/A INT* IRQB* P3[1]
44 N/A M1* VPB P3[0]
45 N/A NMI* NMIB* P5[7]
46 N/A CPURST* CPURESB* P5[6]
47 N/A HALT* ABORT* P5[5]
48 N/A BUSRQ* MLB P5[4]
49 N/A MREQ* VDA P1[7]
50 N/A WAIT* RDY P1[6]
51 N/A IORQ* IRQB* P1[5]
52 N/A BUSACK* CPUE P1[4]
53 N/A CPURD* CPUMX P5[3]
54 N/A CPUWR* RWB P5[2]
55 N/A N/A N/A N/A
56 N/A N/A N/A N/A
57 N/A N/A N/A N/A
58 N/A N/A N/A N/A
59 N/A N/A N/A N/A
60 N/A N/A N/A N/A
61 N/A N/A N/A N/A
62 N/A N/A N/A N/A
63 N/A N/A N/A N/A
64 N/A N/A N/A N/A

LB-65CXX-01

LB-65CXX-01 P1655-720px.jpg

  • LB-65CXX-01
  • 65C02 or 65C816 CPU
  • Oscillator on card
  • Reset switch/power monitor
  • Address decoder PLD drives RAM/ROM/IO chip selects
  • 100x50mm card

LB-6802-01

LB-6802-01 P1670-720PX.jpg

  • LB-6802-01
  • 68N02 CPU
  • Reset switch/power monitor
  • Address decoder PLD drives RAM/ROM/IO chip selects
  • 100x50mm card

LB-6809-01

LB-6809-01 P1090746 Rev2-720px.jpg

  • LB-6809-01
  • 68B09 CPU
  • Reset switch/power monitor
  • Address decoder PLD drives RAM/ROM/IO chip selects
  • 100x50mm card

LB-Z80-01

LB-Z80-01 P1658-720px.jpg

  • LB-Z80-01
  • Z80 CPU
  • Oscillator on card
  • Reset switch/power monitor
  • Address decoder PLD drives RAM/ROM/IO chip selects
  • 100x50mm card

LB-68B50-01

LB-6850-01 FRONT REV1(BLK).png

  • LB-68B50-01
  • 68B50 UART
  • Baud Rate Clock (38.4k baud oscillator)
  • XIAO RP2040 CPU
    • USB/Serial
  • 8-bit parallel port expander
    • SD card
  • 100x50mm card

LB-68B50-02

LB-6850-02 P1090749-720px.jpg

  • LB-68B50-02
  • 68B50 UART
  • Baud Rate Clock (38.4k baud oscillator)
  • Control lines from PLD allow multiple Serial I/O cards
  • 100x50mm card

LB-LOGIC-01

LB-Logic-01 FRONT REV1(BLK).png

  • LB-LOGIC-01
  • Not required for BASIC computer
  • PSoC 5LP CPU
  • USB/Serial
  • 8 I/O pins
  • 3.3V/5V operation
  • Connects to all backplane pins
  • Reset Switch
  • 100x50mm

LB-MEM-02

LB-MEM-02 P1090747-720px.jpg

  • LB-MEM-02
  • 32KB SRAM
    • Supports smaller (28-pin) SRAMs
    • Headers to jump for smaller cards
  • EPROM (up to 64 KB)
  • Connects to Address/Data and Memory control lines
  • 50x75mm card

LB-MEM-03

LB-MEM-03 P1090751-720px.jpg

  • LB-MEM-03
  • EPROM/EEPROM card
  • 32-pin ZIF socket
  • Up to 1MB
  • Supports smaller SRAMs
    • Headers to jump for smaller parts
  • Connects to Address/Data and Memory control lines
  • 50x75mm card

LB-MEM-04

LB-MEM-04 REV1-FRONT-3D.png

  • LB-MEM-04
  • 32/128KB/512KB SRAM
    • Supports 32 and 28 pin SRAMs
    • Headers to jump for smaller cards
  • EPROM (up to 64 KB)
  • Connects to Address/Data and Memory control lines
  • 50x75mm card

LB-BKOUT-01 - Breakout Board

LB-BKOUT FRONT 3D.png

  • LB-BKOUT-01
  • Breakout all bus lines
  • PWR/GND bus down the middle
  • Can be used as NOP tester
  • 84 x 28mm

LB-BKOUT-02 - Breadboard/Breakout Board

LB-BKOUT-02 FRONT 3D.png

  • LB-BKOUT-02
  • Breakout all bus lines around breadboard area
  • PWR/GND bus down the middle
  • 3.3 x 1.7 in

LB-BKOUT-02 - Configured for Logic Analyzer

LB-BKOUT-02 P1090753-720px.jpg

  • Right angle headers for all pins
  • Connect to Logic Analyzer

Mini360 Adapter Board

Mini360 P1090754-720px.jpg

  • Mini360_Adapter_Board
  • Adjustable output voltage level
    • Adjust for 5V output voltage nominal
      • 5.1V is a good starting point
    • Adjust before installing onto backplane
    • Pot is not easy to adjust
  • Wide range of input voltage up to 23V
    • About 1-2V higher (minimum) than output voltage
    • I used 9V, 1A wall wart
    • Works well with 9 or 12V DC wall warts
  • 2x10 header for power distribution
    • Male pins plug into 2x8 female pins on LB-BKPLANE-01 card
    • Other pins can be used for attaching scope ground or other peripheral cards
  • (2) 4-40 mounting holes

Typical Parts

Mouser # Mfr. # Manufacturer Customer # Description Price (USD)
774-MXO45-2C-1M0000 MXO45-2C-1M0000 CTS OSC_1.0MHz Standard Clock Oscillators 1.000000 MHZ Hybrid Circuit $1.61
774-MXO45-3C-1.8 MXO45-3C-1M8432 CTS OSC_1.8MHz Standard Clock Oscillators 1.84320 MHz $3.25
774-MXO45-3C-2.0 MXO45-3C-2M0000 CTS OSC_2.0MHz Standard Clock Oscillators 2.00000 MHz $2.27
556-AF16V8B15PU ATF16V8B-15PU Microchip PLD EEPLD - Electronically Erasable Programmable Logic Devices

15 ns 20 I/O Pins 8 macrocells 8 reg

$1.22
700-DS1813-5T&R DS1813-5+T&R Analog Devices Inc. PWR_MON Supervisory Circuits 5V EconoReset with Pushbutton $3.70
535-1107741 1107741 Aries Electronics SKT_04_DIP IC & Component Sockets OSCILLATOR FULL 4PIN $0.991
575-199320 110-99-320-41-001000 Mill-Max SKT_20_DIP IC & Component Sockets 20P TIN PIN TIN CONT $1.17
575-11044628 110-44-628-41-001000 Mill-Max SKT_28_DIP IC & Component Sockets 28P TIN PIN TIN CONT $1.63
575-1144632 110-44-632-41-001000 Mill-Max SKT_32_DIP IC & Component Sockets 32P TIN PIN TIN CONT $2.27
575-11044640 110-44-640-41-001000 Mill-Max SKT_40_DIP IC & Component Sockets 40P TIN PIN TIN CONT $2.61
517-4848-6000-CP 4848-6000-CP 3M SKT_48_DIP IC & Component Sockets 48P DUAL WIPE DIPSKT $1.23
652-4610X-1LF-10K 4610X-101-103LF Bourns Resistor Networks & Arrays 10pins 10Kohms Bussed $0.214
  • 2X40 Headers
  • MCP100-485DI/TO is a much less expensive part than the DS1813-T (I have not tested it) and it only monitor voltage (can't install reset switch)
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