Difference between revisions of "SIMPLE-Z80"
Jump to navigation
Jump to search
Blwikiadmin (talk | contribs) |
Blwikiadmin (talk | contribs) |
||
| Line 58: | Line 58: | ||
=== J1 - RS-232 Serial === | === J1 - RS-232 Serial === | ||
| + | |||
| + | # N/C | ||
| + | # Receive | ||
| + | # Transmit | ||
| + | # Loop to pin 6 | ||
| + | # GND | ||
| + | # Loop to pin 4 | ||
| + | # RTS | ||
| + | # N/C | ||
| + | # N/C | ||
== Mechanicals == | == Mechanicals == | ||
Revision as of 16:44, 12 September 2022
.png)
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 | 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) |
Connectors
J1 - RS-232 Serial
- N/C
- Receive
- Transmit
- Loop to pin 6
- GND
- Loop to pin 4
- RTS
- N/C
- N/C
Mechanicals
