Project page for speed3ple:
Mostly Z80 ECB stuff here…
| System/Board | Status | Comments |
|---|---|---|
| ECB-backplane-4 | 2 x working | Nice little test bench |
| ECB-backplane-8 | 1 x working | This is the backplane I use the most, has a LPS42 power inside. Plan to build one more. |
| ECB-backplane-12 | 1 x working | I got a Siemens 505-6508 PLC case for this. Still trying to figure out a power and wire placement in that case. |
| ECB-SBC-v2-3a | 3 x working | Solid board, no trouble at 4, 8 and 10Mhz. 1 built with vintage 7400 TTL at 8Mhz. |
| ECB-SBC-v2-4z | 2 x working | Works fine at 10Mhz w/TTL+CMOS Z80. Got sound, speed switch works, recovery mode switch not tested yet. |
| ECB-SBC-v5i | 1 x working | Seems to be working and stable at 10Mhz with LS logic and RomWBW v3.0.1. I'm testing this now. Looks great! |
| ECB-Z180 mk4 | 2 x working | Solid board, no trouble. Works good at (1:1)18.432Mhz with pure LS logic. Got 3 fake Z180 cpu first… |
| ECB-KISS-68030 | 1 x under construction | Still not working! maybe I got some bad parts? |
| ECB-MF-PIC | 2 x under construction | Completed but un-tested |
| ECB-DiskIO v3 | 4 x working | Angled IDE connector for easy topside CF card access |
| ECB-DualSD | 1 x working | Works fine with SBC v4z (12Mhz). PCB made from the new Gerber files (Thanks!). Compile RomWBW with SDENABLE.SET TRUE and SDMODE.SET SDMODE_DSD The SD card sockets I have (ebay) needed bending of WP pin. |
| ECB-RamFloppy | 2 x working | R11 version. Built with 8 x xAS6C4008. I used a TLC7705D SMD version. Good read/write speeds! |
| ECB-Cassette IF | 2 x working | Built both version, 300+600 baud. Value of timing capacitor C2 is critical. |
| ECB-VDU | 1 x under construction | Does not work yet. Maybe got some bad parts? |
| ECB-VGA3 | 1 x under construction | Does not work yet. Maybe got some bad parts? |
| ECB-PropIO v2 | 3 x working | Runs firmware from RomWBW v2.9.1(v0.95). |
| ECB Zilog Peripheral | 1 x under testing | PCB v2, with 1xDART, 2xPIO and CTC. |
| ECB-4PIO-R04 | 1 x working | I got it working, will make a new cable and test more. |
| DSKY | 1 x working | Completed and is working |
| ECB-Bus Monitor | 1 x under test | Blinkenlights blinks, but I don't fully understand how to use this… |
| ECB-USB-FiFo | 1 x under test | |
| ECB-Prototype-III | 3 x under construction | |
| ECB-ATB | 1 x under test | Got this working, i think, but… |
| ECB-SCG | 1 x under construction | Status: have PCB, collecting parts… |
| ECB-VGM | 1 x under construction | Status: have PCB, collecting parts… |
| Hardware Terminals | ||
| Geoff Graham | 1 x Built, testing | Serial RS-232 to VGA/Composite hardware terminal based on Microchip PIC32MX250F128B. Single chip ASCII video display terminal with VT100 and VT52 emulation. |
| uTerm-S | 1 x Built, working | Serial RS232 to VGA hardware VT-100 terminal based on STM32F030F4P6 CPU. Using ChibiTerm for emulating video. Project found on hackaday / “Just4fun” |
| uTerm2-S | 1 x under construction | Serial RS232 to VGA hardware terminal based on ESP32-Wroom-32 module. Emulation based on FabGL library. Project found on hackaday / “Just4fun” |
| VersaTerm | 1 x under construction | Serial RS232 to VGA/HDMI hardware terminal based on Raspberry Pi Pico module and PicoVGA library for generating video signals. Project found on github / “dhansel” |
| Non-ECB systems: | ||
| Zeta 2 | 2 x working | Stable at 16Mhz(LS) and 20Mhz (AHCT). 1 built into a metal case together with ParPortProp as a unit |
| Easy-Z80 | 1 x working | Small and easy to build. I got the v1.1 pcb. Nice! Update: I connected a RC2014 IDE board for CF card storage. |
| Z80-GrantS | 1 x working | Small pcb based on Grant Searle Z80. Runs basic. |
| Z80-Trainer | 1 x working | Big 4 layer board by smbaker. Has keyboard and optional TIL311s or LCD1602. Runs RomWBW. Designed w/CTC, PIO, SIO/2External RC2014 bus. |
| ISA bus boards: | ||
| ISA Micro8088 | 1 x working | |
| ISA backplane | 1 x working | |
| ISA XT-IDE | 2 x under testing | |
| ISA Super-VGA | 1 x working | |
| ISA-XT-CF-Lite | 2 x working | |
| ISA-FDU-Serial | 1 x working | |
| ISA-RTC | 1 x working | |
| RC2014 boards: | ||
| RC2014-IDE | 1 x under construction | IDE I/F based on 8255 chip |
| RC2014-RTC | 1 x under construction | Real-time clock based on 1302 chip |
| Text | Images | |
|---|---|---|
| 2048 game in RomWBW: (Seems to only work with serial cable) | ![]() | |
| “Hidden” Easteregg in RomWBW (Mandelbrot ascii art) | ![]() |

