HardLabs

MZ-1500 SD

yanataka60·MZ-1500_SD·KiCad/MZ-1500_SD.kicad_pcb

MZ-1500 SD PCB layout, top view — open source AVR/Arduino board by yanataka60

About the MZ-1500 SD PCB

MZ-1500 SD is an open source AVR/Arduino PCB design by yanataka60, published on GitHub under the MIT license. It is a 2-layer board measuring 114.8 × 104.4 mm, with 33 components from 16 distinct parts.

Its main chip is the Arduino_Pro_Mini, from the AVR/Arduino family. Other key parts include the 74LS04, 74LS30, 74LS10, 74LS14 and 8255. By type, the board carries 15 capacitors, 14 ICs, 2 connectors, 1 switch and 1 resistor.

From the project

MZ-1500でSD-CARDからのアプリケーション起動、BASICなどのアプリケーションからSD-CARDへのロード、セーブを実現するものです。

MZ-1500でSD-CARDからのアプリケーション起動、BASICなどのアプリケーションからSD-CARDへのロード、セーブを実現するものです。

MZ-1500にはMZ-1R12が装備されているとS-RAMに保存されているプログラムから起動する機能がありますが、疑似的にMZ-1R12のふりをすることでMZ-1500_SDに搭載したROMからSD-CARDからアプリケーションを起動させる機能を持たせたMONITORプログラムを起動させます。

SD対応MONITORからはFD又はFDLコマンドでSDからアプリケーションをLOAD実行ができます。

SD対応MONITORは本体ROMの1Z-009BをRAMにコピーしてうえでSD対応のプログラムを付加しています。

LOAD実行範囲は、0000h～CFFFhです。アプリケーション、ゲームを起動させるにはほぼ問題ないと思います。

MZ-1500 SD, from the project README
From the project README

Main components on the MZ-1500 SD

74LS0474LS3074LS1074LS148255Arduino_Pro_Mini74LS19329C256/27C51274LS245

MZ-1500 SD bill of materials (BOM)

33 components, 16 distinct parts.

QtyPartRefs
2
74LS04
U1, U2
2
74LS30
U3, U4
1
74LS10
U5
1
74LS14
U6
1
8255
U7
1
Arduino_Pro_Mini
U8
4
74LS193
U9, U10, U11, U12
1
29C256/27C512
U13
1
74LS245
U14
1
Micro_SD_Card_Kit
J2
1
MicroSD Card Adapter
J3
1
A_B_CHANGE
S1
13
0.1uF
C1, C2, C4, C5, C6, C7, C8, C9 +5
1
100uF
C3
1
220pF
C15
1
100
R1

MZ-1500 SD design files

The KiCad project lives in the yanataka60/MZ-1500_SD repository on GitHub; these links point at the commit this page was built from.

MZ-1500 SD: common questions

What microcontroller does the MZ-1500 SD use?

The MZ-1500 SD is built around the Arduino_Pro_Mini, from the AVR/Arduino family.

How big is the MZ-1500 SD PCB?

The MZ-1500 SD measures 114.8 × 104.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MZ-1500 SD?

33 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the MZ-1500 SD design files?

From the yanataka60/MZ-1500_SD repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the MZ-1500 SD design in my own project?

Yes, under the terms of its MIT license, which yanataka60 chose for the repository.

Can I test firmware for the MZ-1500 SD without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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