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Over View
The GB is portable game console, therefore we have to develop by actual console & CART. Usually, developed by Flash CART. But inconvenience at insert & extract. And exceeding durability times of connector. So we should make envrionment as directly download to ROM emualtor. This ROM Emualtor is downloadable via paralell interface. Transfer command as follows, MS-DOS...
COPY file_name LPTx: [ENTER]
UNIX.....cp file_name lpx [ENTER]
Usually, this command is put in makefile. After compling, target program will be downloaded & excuted in automatically.
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Appearance
Very simple circuit. However, quite powerful at debugging.
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Schematics(Constructing)
ROM-Emulator schematics.
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Parts List
*1 On you demand Item Spec. Qty/Dimension S RAM(*1) HM62256ALP-10 1 ( 32KB用) S RAM(*1) HM628128ALP-8 1 (128KB用) S RAM(*1) HM628512ALP-8 1 (512KB用) CMOS IC 74HC00 1 CMOS IC 74HC14 1 CMOS IC 74HC193 5 CMOS IC 74HC541 1 CMOS IC 74HC574 1 CMOS IC 74HC4538 2 Comparator IC LM393N(N.S.) 1 Reset IC PST532(MITSUMI) 1 Diode 1S1588 5 Diode 1S1885A 1 LED GL-3PR8(SHARP) 2 Photo cuppler PC817(SHARP) 2 Carbon Reg. 100 Ohm 2 Carbon Reg. 300 Ohm 1 Carbon Reg. 510 Ohm 2 Carbon Reg. 1 KOhm 2 Carbon Reg. 2.2 KOhm 1 Carbon Reg. 5.1 KOhm 1 Carbon Reg. 100 KOhm 1 Metalic Reg. 4.7 KOhm 2 Metalic Reg. 10 KOhm 1 Metalic Reg. 750 KOhm 1 Alley Reg. 8elements 100 KOhm 1 Alley Reg. 4elements 10 KOhm 1 Super Capacitor 5.5V 1F 1 Chemical Capacitor 35V 100microF 1 Tuntle Capacitor 35V 4.7microF 1 Tuntle Capacitor 35V 1microF 1 Plastci Film Cap. 50V 0.001microF 2 Stirole Cap. 50V 0.0001microF 2 Layered ceramic Cap. 50V 0.1microF 1 NPN Transistor 2SC1815 1 Connector D-SUB15P XM2D-1501(OMRON) 1 Connector D-SUB15P X2Z-0021(OMRON) 1 Connector Flat type 34P XG4A-3434(OMRON) 1 Jumper pin XJ8D-0311(OMRON) 2 Jumper pin XJ8A-0211(OMRON) 1 IC socket ICC05-032-360T(KEL) 1
This ROM Emulator is developed by Mr.Yoshikazu Yura. Possible to reduce turn around time at debugging. This ROM Emulator has 8bit data bus, We can apply to use at developing not only GB but also SNES.