Reference / Paper · 1993

Acorn Support Group Application Note 238 — Connector Pinouts (Electron, BBC B/B+, Master)

2 August 1993 connector reference: analogue port pin 9 is the light-pen strobe (LPSTB).

Author: Acorn Computers
Year: 1993
Type: Reference / Paper
Credit: Acorn Computers. Copy from Chris's Acorns (chrisacorns.computinghistory.org.uk)

acorn
bbc micro
pinout
light pen

2nd August 1993 Support Group Application Note No. 238, Issue 1 Electron Support Group Application Note Number: 238 Issue: 2 Author:PD 2nd August 1993 All Connectors viewed from outside Connector: Cassette Type: 7-pin DIN 7 Electron, BBC B, B+, Master 128 and Master Compact port pinouts. 6 1 3 5 4 2 Pinout: 1 Output 2 0V 3 Input 4 Output 5 N/C 6 } Motor Control 7 Connector: RGB Type: 6-pin DIN 5 1 6 4 2 Pinout: 1 Red 2 Green 3 Blue 4 Sync 5 0V 6 +5V 3 Connector: UHF Type: Phono Applicable Hardware : N/A Related Application Notes: Pinout: 1 UHF 2 Ground 1 N/A 2 Connector: Video Out Type: Phono Pinout: 1 Video 2 Ground Copyright © Acorn Computers Limited 1993 1 Every effort has been made to ensure that the information in this leaflet is true and correct at the time of printing. However, the products described in this leaflet are subject to continuous development and improvements and Acorn Computers Limited reserves the right to change its specifications at any time. Acorn Computers Limited cannot accept liability for any loss or damage arising from the use of any information or particulars in this leaflet. ACORN, ECONET and ARCHIMEDES are trademarks of Acorn Computers Limited. Support Group Acorn Computers Limited Acorn House Vision Park Histon, Cambridge CB4 4AE 2 Support Group Application Note No. 238, Issue 1 2 Support Group Application Note No. 238, Issue 1 2nd August 1993 BBC Model B, B+ and Master 128. Pinout: 1 Red 2 Green 3 Blue 4 Sync 5 0V 6 +5V 1 6 4 2 2nd August 1993 Connector: Econet Type: 5-pin DIN Connector: RGB Type 6-pin DIN 5 Support Group Application Note No. 238, Issue 1 3 Pinout: 1 Data + 2 0V 3 Clock + 4 Data 5 Clock - 1 5 4 2 3 Connector: RS 423 Type: 5-pin DIN B Connector: UHF Type: Phono D C A Pinout: 1 UHF 2 Ground Pinout: A) Data in B) Data Out C) 0V D) CTS E) RTS 1 E 2 Connector: Cassette Type: 7-pin DIN 7 Connector: Video Out Type: BNC Pinout: 1 Output 2 0V 3 Input 4 Output 5 N/C 6 } Motor Control 7 6 1 3 5 4 2 Pinout: 1 Video 2 Ground 1 2 Connector: Analogue in Type: 15 way D-type socket 7 8 15 6 14 5 13 3 4 12 11 2 10 1 9 Pinout: 1 +5V 9 light pen strobe (notLPSTB) 2 0V 10 digital switch input (I1) 3 0V 11 voltage reference (VREF) 4 CH3 12 CH2 5 analogue ground 13 digital switch input (I0) 6 0V 14 voltage reference (VREF) 7 CH1 15 CH0 8 analogue ground Support Group Application Note No. 238, Issue 1 3 33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 Support Group Application Note No. 238, Issue 1 4 Support Group Application Note No. 238, Issue 1 2nd August 1993 Support Group Application Note No. 238, Issue 1 2nd August 1993 Connector: 1MHz Bus Type: 34-way IDC Connector: Disc Drive Type: 34-way IDC 33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1 33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 Pinout 1 0V 2 (S/SEL 8") 3 0V 4 (INX 8") 5 0V 6 N/C 7 0V 8 INX 5¼" 9 0V 10 S0 11 0V 12 S1 13 0V 14 N/C 15 0V 16 MOTOR 17 0V 18 notDIR 19 0V 20 21 0V 22 W/DATA 23 0V 24 WR/EN 25 0V 26 TK0 27 0V Pinout: 28 WR PCT 29 0V 30 R/DATA 31 0V 32 S/SEL 5¼" 33 0V 34 (RDY 8") 1 0V 2 R/W 3 0V 4 1E 5 0V 6 NMI 7 0V 8 IRQ 9 0V 10 PGFC 11 0V 12 PGFD 13 0V 14 RS 15 0V 16 audio in / out 17 0V 18 D0 19 D1 20 D2 21 D3 22 D4 23 D5 24 D6 25 D7 26 0V 27 A0 28 A1 29 A2 30 A3 31 A4 32 A5 33 A6 34 A7 Connector: Tube type: 40-way IDC Connector: Parallel Type: 26-way IDC Pinout: 25 23 21 19 17 15 13 11 9 7 5 3 1 26 24 22 20 18 16 14 12 10 8 6 4 2 1 STB 2 0V 3 PA0 4 0V 5 PA1 6 0V 7 PA2 8 0V 9 PA3 10 0V 11 PA4 12 0V 13 PA5 14 0V 15 PA6 16 0V 17 PA7 18 0V 19 ACK 20 0V 21 N/C 22 0V 23 N/C 24 0V 25 N/C 26 N/C 15 13 11 9 7 5 3 1 20 18 16 14 12 10 8 6 4 2 1 +5V 2 CB1 3 +5V 4 CB2 5 0V Support Group Application Note No. 238, Issue 1 6 PB0 7 0V 8 PB1 9 0V 10 PB2 11 0V 12 PB3 13 0V 14 PB4 15 0V 35 33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 1 0V 2 R/W 3 0V 4 2E 5 0V 6 1RQ 7 0V 8 TUBE 9 0V 10 RS Pinout: 17 37 Pinout: Connector: User Port Type: 20-way IDC 19 39 16 PB5 17 0V 18 PB6 19 0V 20 PB7 5 11 0V 12 D0 13 0V 14 D1 15 0V 16 D2 17 0V 18 D3 19 0V 20 D4 21 0V 22 D5 23 0V 24 D6 25 0V 26 D7 27 0V 28 A0 29 0V 30 A1 Support Group Application Note No. 238, Issue 1 31 +5V 32 A2 33 +5V 34 A3 35 +5V 36 A4 37 +5V 38 N/C 39 +5V 40 N/C 6 Support Group Application Note No. 238, Issue 1 2nd August 1993 Master Compact The majority of the Master Compact connectors are the same as the Model B and Master, however there are some different and additional connectors which are documented below. Connector: Joystick Type: 9-pin D-type 1 3 2 7 6 4 8 Pinout: 1 PB3 2 PB2 3 PB1 4 PB4 5 CB1 6 PB0 7 +5V 5 9 8 0V 9 CB2 (LPTSTB - if connected) Connector: Disc Drive Type: 25-way D-type Pinout: 1 3 2 14 15 4 16 17 7 6 5 18 19 8 20 9 21 10 22 11 23 13 12 24 25 1 INDEX 2 S0 3 S1 4 N/C 5 MOTOR 6 DIR 7 STEP 8 WRITE DATA 9 WRITE ENABLE 10 TRACK 0 11 WRITE PROTECT 12 READ DATA 13 SIDE SELECT 14 to 25 0V Connector: Parallel Type: 24-way Delta type D connector Pinout: 12 11 10 9 8 7 6 5 4 3 2 1 24 23 22 21 20 19 18 17 16 15 14 13 Support Group Application Note No. 238, Issue 1 1 STB 2 PD0 3 PD1 4 PD2 5 PD3 6 PD4 7 PD5 8 PD6 9 PD7 10 ACK 11 N/C 12 N/C 13 to 25 0V 7