7bit Wicher 500i User manual

1
Wicher 500i
rev.2c
Installation Guide

2
Package contents
Complete Wicher 500i rev.2c package contains:
Wicher 500i rev.2c card in a protective case(CPU is not included),
Two connection cables
Installation Guide
Computer preparation
Every action regarding your Amiga’s case disassembly should be performed with the computer being powered down.
Before installing Wicher 500i rev.2c card one should remove Amiga’s case and dismantle the RF shielding. Next you
should locate the U1 chip (MC68000 CPU) and remove it from its socket. This operation should be performed using a
proper tooling.
The U1 chip ( MC68000 )

3
Installing CPU in your Wicher 500i rev.2c card
Wicher 500i rev.2c card supports the following processor models:
MC68000, MC68HC000, MC68010 CPUs in PLCC68 packaging.
The CPU should be installed in the socket located on the card in the position indicated in the following picture.
CAUTION!!!
Installation of the CPU should be performed in accordance with the markings visible on the socket and the chip itself.
Incorrect installation may result in the damage to the CPU, the card or the computer.
MC68000, MC68HC000, MC68010
CPU socket

4
Turbo card installation
Installation of the card should always be performed with the Amiga being powered down.
Wicher 500i rev.2c turbo card has been designed for installation inside the Amiga A500/A500+ computer.
After removing the original MC68000 CPU, one can start the proper Wicher 500i rev.2c turbo card installation. In order to
carry it out, the pins found at the bottom side of the turbo card, should be carefully inserted into the U1 chip socket and
then the card should be pressed gently until it seats firmly.
Then one should connect the two provided cables to the card’s SV1 port, following the instructions presented below.
INT2 signal of the SV1 port should be connected to the 21st pin of the U7 (ODD CIA A) chip, whereas OVR signal of the SV1
port should be connected to the 29thpin of the U5 (Gary) chip. Both of the aforementioned U5 and U7 chips should be
easy to locate on Amiga’s motherboard.
SV1 port location

5
Properly connected signal cables.
CAUTION!!!
Please take special care when installing the PCB board and connecting the signal cables. Incorrect installation may
result in the damage to the computer or the turbo card.
When Wicher 500i rev.2c card is properly installed, you can finally put it through its paces.
X2 jumper configuration
Position 0 –ON / OFF turbo card
Position 1 –25 MHz / 12 MHz
Position 2 –RAS13 ON / OFF
CAUTION.
RAS13 enabled for two-sided memory
RAS13 disabled for single-sided memories

6
Software installation
Please visit our website https://retro.7-bit.pland download software installer providing the necessary software
components.
More information about Wicher 500i rev.2c turbo card can be found on our website, at the following
URL: http://retro.7-bit.pl
7-BIT Artur Gadawski
ul. Miłostowska 23/7
Wrocław, Poland
BDO: 000007249
http://retro.7-bit.pl