serial-USB adapter support on the Serial Port 2 with independent power supply (Full HW configuration option only).
on board RS232 drivers for both the two serial ports (Full HW configuration option only).2 serial ports (Serial Port 2 supported on the Full HW configuration option only).optional RTC and microSD (HD emulation) modules (the same used in the Z80-MBC2).RAM can be configured as 128/512/1024KB (1024KB supported on the Full HW configuration option only).Lite HW configuration option allows to build a minimal 8 system two main HW configuration options: Lite or Full.Won’t be a problem, and after all learn to use a professional tool
With a lot of “power” comes a lot of complexity too… I hope this
Wanting make modifications to the firmware will have to install the More complex to use than the Arduino IDE (but I must say a lot more Second is the constraint to use a proprietary IDE (MPLAB X) to write or modify the source that is See the paragraph " FLA SHING THE FIRMWARE WITH AN ARDUINO UNO AS PROGRAMMER" below). Of interesting features and more flash and RAM memory thanĬourse nothing comes free, and the choice of a PIC18F47Q10įirst is the need for an appropriate HW programmer to perform the flashing (however I've found a way to use a common Arduino Uno board as PIC programmer. Only part I’ve found was a PIC18F47Q10 MCU, and I must say that itĪccomplish the previous constrains very well. I’ve done some searches to find an alternative MCU having three mainĬonstraints: must have TTL compatible GPIOs (I mean strictly "guaranteed" TTL compatible), must be a TH part and cheap too. Here the 68008 CPU isn’t available in CMOS technology at all, so an Solved in the previous boards using a CMOS CPU that under givenĬonditions can accomplish the digital levels of the Atmega MCU. Many ways to flash the MCU, so this is an enabling factor.Ītmega MCU GPIO ports are not TTL compatible, and this limitation was Using an Atmega MCU allows to use the friendly Arduino IDE and Z80-MBC2 and V20-MBC boards will note that I haven’t used here anĪtmega MCU. To allow a real automated toolchain an auto-reset circuit on the breadboard takes the DTR signal from the serial-USB adapter and uses it to reset the MCU (like in the Arduino Uno board), so it is possible reset the breadboard from a batch file running in the PC using a macro of Tera Term.
In this case you have just to click on the link of the chapter's title to open a new tab and read it. io site a few chapters have been moved to "Log files". * NOTE TO THE READER *: Due to a text size limitation of the Hackaday.