SIMPLE-6802

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Revision as of 16:38, 12 September 2022 by Blwikiadmin (talk | contribs) (→‎EPROM/EEPROM Select Jumpers)

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Contents

1 Features
- 1.1 Memory Map
2 Headers
- 2.1 EPROM/EEPROM Select Jumpers
3 Mechanicals
4 Assembly Sheet

Features

Build of Grant Searles's Simple 6809 CPU
- Runs MIKBUG
68B02 CPU
32KB SRAM
16KB EPROM/EEPROM
68B50 Serial Port (ACIA)
- RS-232 port
- Header for FTDI
Reset switch with optional Power Supervisor
95x95mm card
(4) 6-32 mounting holes

Memory Map

0x0000-0x7FFF 32KB SRAM
0x8000-0x9FFF Free Space (8KB)
0xA000-0xBFFF Serial (ACIA)
0xC000-0xCFFF 16KB EPROM

Headers

EPROM/EEPROM Select Jumpers

PART	J2 PIN 1	J5 PIN 27
27128 EPROM	VPP (5V)	PGM (5V)
27C256 EPROM	VPP (5V)	A14 (GND)
27C512 EPROM	A15 (GND)	A14 (GND)
SST27SF256 EEPROM	VPP (5V)	A14 (GND)
SST27SF512 EEPROM	A15 (GND)	A14 (GND)

Mechanicals

Assembly Sheet

SIMPLE-6802 Rev 1 Assembly Sheet

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