Eshs

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		+	=== Interrupts ===
		+	NMI: Caused by LD-V1000 status strobe going low (becoming active)
		+
		+	IRQ: Caused by D2 output (pin 10) on vertical PROM (C6) transitioning from 0 to 1.

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Revision as of 15:57, 13 August 2020

Contents 1 Esh's Aurunmilla 1.1 Memory Map 1.2 Z80 Port Map 1.3 Interrupts

Esh's Aurunmilla

Memory Map

Address Range	Description
0x0000-0x1FFF	ROM H8
0x2000-0x3FFF	ROM F8
0x4000-053FFF	ROM E8
0x6000-073FFF	ROM D8
0x8000-0x9FFF	ROM C8
0xE000-0xE7FF	CPU RAM
0xF000-0xF7FF	Unknown (Daphne says that this is video hardware)

Z80 Port Map

Address Range	Direction	Description
0xF0	In	Control panel input. Only lower 6 data bits are used.
0xF1	In	Control panel input. Only lower 6 data bits are used.
0xF2	In	Control panel input. Only lower 6 data bits are used.
0xF3	In	Control panel input. Only lower 6 data bits are used.
0xF4	In/Out	LD-V1000 data. Writing queues a command to be sent on the next command strobe. Reading reads the most recent byte received during last the status strobe.
0xF5	Out	Misc value?

Interrupts

NMI: Caused by LD-V1000 status strobe going low (becoming active)

IRQ: Caused by D2 output (pin 10) on vertical PROM (C6) transitioning from 0 to 1.