Difference between revisions of "SIMPLE-Z80"
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* 7.3728 MHz clock | * 7.3728 MHz clock | ||
* 56KB SRAM (uses 128KB parts) | * 56KB SRAM (uses 128KB parts) | ||
| − | * EPROM/EEPROM | + | * 8KB EPROM/EEPROM |
* 68B50 Serial Port (ACIA) | * 68B50 Serial Port (ACIA) | ||
** RS-232 port | ** RS-232 port | ||
| Line 15: | Line 15: | ||
* 95x95mm card | * 95x95mm card | ||
* (4) 6-32 mounting holes | * (4) 6-32 mounting holes | ||
| + | |||
| + | === Memory Map === | ||
| + | |||
| + | * 0x0000-0x1FFF 8KB ROM | ||
| + | * 0x2000-0xFFFF 56KB SRAM | ||
| + | * I/O | ||
| + | ** 0x00-0x7F - Free | ||
| + | ** 0x80-0x81 - Serial port (ACIA) | ||
== Headers == | == Headers == | ||
Revision as of 16:33, 12 September 2022
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Contents
Features
- Build of Grant Searles's Simple Z80 CPU
- Runs BASIC
- Z80 CPU
- 7.3728 MHz clock
- 56KB SRAM (uses 128KB parts)
- 8KB 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
- 0x0000-0x1FFF 8KB ROM
- 0x2000-0xFFFF 56KB SRAM
- I/O
- 0x00-0x7F - Free
- 0x80-0x81 - Serial port (ACIA)
Headers
EPROM/EEPROM Select Jumpers
| PART | PIN 1 | 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
