Difference between revisions of "LB Backplane Computer"

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* 100x100mm card
 
* 100x100mm card
 
* (6) 4-40 mounting holes
 
* (6) 4-40 mounting holes
 +
 +
==== 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 ===

Revision as of 20:46, 17 September 2022

Land Boards Backplane Computer

Features

  • 24-bit address support
  • 8 bit data
  • Backplane, CPU, Memory, I/O cards

Backplane

LB-BKPLANE-01 FRONT-3D.png

  • 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

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-65C816-01 FRONT REV1(BLK).png

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

LB-6809-01

LB-6809-01 FRONT REV1(BLK).png

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

LB-Z80-01

LB-Z80-01 FRONT-3D.png

  • 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

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

LB-LOGIC-01

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

  • 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 REV1-FRONT-3D.png

  • Up to 1MB
  • Supports smaller SRAMs
    • Headers to jump for smaller cards
  • Connects to Address/Data and Memory control lines
  • 50x75mm card

LB-MEM-03

LB-MEM-03 REV1-FRONT-3D.png

  • 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
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