A3001 Series II (Impact A2000-030)
Company
Great Valley Products, USA
Date
1991
Amiga
A2000
Interface
CPU slot
Autoconfig ID
2017 / 8,9,13
    processor
  • 68030 @ 33 / 50 MHz, PGA
  • 68882 @ 33 / 50 MHz, PGA - clocked separately from the CPU
    memory daughterboard (68030-RAM32)
  • eight 64 pin SIMM sockets accept up to 8 or 20 MB RAM
  • supports only special 1 or 4 MB, 60 ns GVP SIMMs
  • 60 ns SIMMs are required for 50 MHz, 70 ns for 33 MHz, 80 ns for 25 MHz
  • 16 - 33 MHz boards support 1 MB SIMMs only, possible configurations are 2, 4 and 8 MB
  • 50 MHz boards support 4 MB SIMMs, possible configurations are 4, 8, 12, 16 and 20 MB
  • using a 4 MB SIMM requires four 1 MB SIMMs to be installed in sockets 3 to 6, so the 4 MB SIMMs can only be installed into sockets 7 to 10
    IDE controller
  • autoboot ROM (gvpat.device)
  • does not support drives that has more than 1024 cylinders
  • autobooting requires at least Kickstart 1.3 - the autoboot ROM should be removed with Kickstart 1.2
  • controller uses byte-swapped storaging, so the HDD will be unreadable on other controllers without that feature
  • 40 pin internal IDE header
  • A-Max II driver (gvpat.amhd) - requires gvpat.device v2.4 and A-Max v2.06
    jumper settings
  • main board (rev 7):
    J4
    ON
    OFF    		J5
    OFF
    ON    		- FPU clock
    - from oscillator U2
    - from oscillator U1
    J10
    ON
    OFF    		J12
    ON
    OFF    		J13
    ON
    OFF    		J14
    OFF
    ON    		- clocking mode
    - A2000-A german motherboard, 68000 must be removed
    - A2000-B motherboard
    J6 -MMU: ON - disable
    J7 -CPU clock: OFF - 50 MHz, ON - lower
    J9 -68030 Boot code EPROMS (U23 and U25): OFF - enable
    J11 -68000 fallback mode: ON - enable
    J15 -IDE autoboot EPROM (U34): ON - enable
    J17 -IDE autoboot EPROM type: ON - 27256, OFF - 27128
    J18 -IDE drive: OFF - connected (with autoboot EPROM v3 or later)
    J1, J16
    ON    		J2
    OFF
    - reserved
  • memory board (rev 3):
    J3
    OFF
    ON    		CN11
    OFF
    2-3    		CN13
    ON
    OFF
    - 50 MHz
    - lower clock
    J5
    ON
    OFF    		- memory address of CN7-CN10 SIMMs
    - Zorro II address space (with 1 MB SIMMs only)
    - 0x01000000 (with 4 MB SIMMs only)
    J1, J4, J6, J8
    ON    		J2, J11
    OFF    		CN12
    1-2
    - reserved
    notes
  • two ROM sockets for UNIX boot ROMs that require an A2090A SCSI controller - these ROMs are compatible with those on the A2630
  • the memory and IDE controller is also deactivated in 68000 fallback mode
Photos
Great Valley Products A3001 Series II (Impact A2000-030) - Series II front side
Series II, front side
Great Valley Products A3001 Series II (Impact A2000-030) - Series II back side
Series II, back side
Great Valley Products A3001 Series II (Impact A2000-030) - RAM32 board front side
RAM32 board, front side
Great Valley Products A3001 Series II (Impact A2000-030) - RAM32 board back side
RAM32 board, back side
Driver / Installation Disk
Vintage Advert

Advert (US)
1991-05