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VIC-20 HYPER EXPANDER Memory Expander & Software / Diagnostics vic20_hyperexpander

$59.00 each

OVERVIEW
DETAILS

OVERVIEW

The PCB is populated with a W27C512 EPROM programmed with the "Hyper_Expander_Firmware_Set1"

The W27C512 is electrically erasable so can be reprogrammed using a suitable programmer (Not supplied) to program your own images.

Included on the EPROM: (See photos for screenshots of the software included on the ROM)

Super Expander & VICMON
RAM Expansion Test
VC-20 Diagnostic PAL (Requires harness for full test - not supplied)
VC-20 Diagnostic NTSC (Requires harness for full test - not supplied)
VIC-20 Dead Test
VIC Color Test
VIC Debug 98
BASIC v5

The ROM's (And RAM configuration) are selected using the DIP Switches.

Payment Options

We accept CASH, EFTPOS, VISA or Master Card.
Credit cards incur 2% surcharge and are in store only.

We accept Direct Deposit for orders being freighted.

Important Information

Prices and specifications are subject to change.
Images are for illustration purposes and may be different to final product.

Please check the manufacturer's website for up to date specifications

Switch	Chip Select	RAM Address	Note
1	/BLK1	$2000 - $3FFF	First 8k Expansion, BASIC RAM
2	/BLK2	$4000 - $5FFF	Second 8k Expansion, BASIC RAM
3	/BLK3	$6000 - $7FFF	Third 8k Expansion, BASIC RAM
4	3kB	$0400 - $0FFF	BASIC RAM (without any 8k Expansions)
5	/BLK5	$A000 - $BFFF	8kB, no BASIC RAM, machine language only
6	/IO2	$9800 - $9BFF	1kB, no BASIC RAM, machine language only
7	/IO3	$9C00 - $9FFF	1kB, no BASIC RAM, machine language only

1 /BLK1	2 /BLK2	3 /BLK3	4 3kB	5 /BLK5	6 /IO2	7 /IO3	8 J2	BASIC BYTES FREE/ Expansion Size
OFF	X	X	ON	X	X	X	I	6655 / 3kB
ON	OFF	X	X	X	X	X	I	11775 / 8kB
ON	ON	OFF	X	X	X	X	I	19967 / 16kB
ON	ON	ON	X	X	X	X	I	28159 / 24kB
ON	ON	ON	ON	ON	ON	ON	I	28159 / 37kB (24k for BASIC)

A15 SW3-3	A14 SW3-2	A13 SW3-1	A15	A14	A13	EPROM Offset Address
ON	ON	ON	L	L	L	$0000 - $1FFF
ON	ON	OFF	L	L	H	$2000 - $3FFF
ON	OFF	ON	L	H	L	$4000 - $5FFF
ON	OFF	OFF	L	H	H	$6000 - $7FFF
OFF	ON	ON	H	L	L	$8000 - $9FFF
OFF	ON	OFF	H	L	H	$A000 - $BFFF
OFF	OFF	ON	H	H	L	$C000 - $DFFF
OFF	OFF	OFF	H	H	H	$E000 - $EFFF

SW3	Chip Select	VIC-20 Address	EPROM
-6	/BLK1	$2000 - $3FFF	IC2
-4	/BLK2	$4000 - $5FFF	IC1
-7	/BLK3	$6000 - $7FFF	IC2
-5	/BLK5	$A000 - $BFFF	IC1

VIC-20 HYPER EXPANDER Memory Expander & Software / Diagnostics vic20_hyperexpander

OVERVIEW

DETAILS

Payment Options

Important Information

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