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Processor Expansions for A500
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Single Expansion
Wicher 520i
Manufacturer
7-bit
, Poland
Date
2026
Amiga
A500, A500+
Interface
68000 socket
Processor
provides a PGA CPU socket, card doesn't come with a pre-installed CPU
compatible CPU: MC68020 @ 20, 25 or 33 MHz
Memory
expansion provides 32 MB FastRAM
SDRAM memory, soldered to the board
IDE Controller
A600 compatible IDE controller
1× 44 pin IDE pin header to connect 2.5" HDDs
requires Kickstart ≥v2.05 (37.350), recommended is Kickstart v3.1
Notes
battery-backed real-time clock (CD2032 battery)
can be upgraded with SPI modules, e.g. RTC, Ethernet, MP3 codec or SD-Card expansions
MapROM (Kickstart ROM in FastRAM) and BootROM function
installs into the 68000 socket
can be configured by software:
set CPU clock
enable/disable CPU cache
enable/disable 1.5 MB Trapdoor RAM ($C00000)
enable/disable 1.5 MB A0 RAM ($A00000)
enable/disable MapROM
enable/disable BootROM
enable/disable IDE interface
enable/disable SPI interface
display version information
jumper connections have to be made to two chips on the motherboard
INT2: connection to Odd CIA (A) pin 21 (location U7)
OVR: connection to Gary pin 26 (location U5)
Manual
Wicher520i-pl.pdf
Instrukcja Obslugi / User Manual (polish)
5.9 MB
Driver / Installation Disk
Wicher-29.lha
Installer v2.9
240 kB
Wicher-29.adf
Software Disk v2.9
880 kB