{"id":23168,"date":"2026-03-01T12:34:25","date_gmt":"2026-03-01T11:34:25","guid":{"rendered":"https:\/\/www.intexsound.de\/Commodore-Museum-Mannheim\/?p=23168"},"modified":"2026-03-01T12:38:00","modified_gmt":"2026-03-01T11:38:00","slug":"a2058-ja-0007511","status":"publish","type":"post","link":"https:\/\/www.intexsound.de\/Commodore-Museum-Mannheim\/2026\/03\/01\/a2058-ja-0007511\/","title":{"rendered":"A2058 | JA 0007511"},"content":{"rendered":"
\n

A2058<\/strong><\/p>\n

Serial: JA 0007511<\/p>\n<\/div>\n\n\n\n
\n
Manufacturer<\/div>\n

Commodore<\/a>, USA<\/td>\n

\n
Date<\/div>\n

1986<\/td>\n

\n
Amiga<\/div>\n

A2000, A3000, A4000<\/td>\n

\n
Interface<\/div>\n

Zorro II<\/td>\n

\n
Autoconfig ID<\/div>\n

514 \/ 10<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n

RAM expansion card<\/i><\/p>\n

    \n
  • 64 DIP sockets accept 8 MB RAM<\/li>\n
  • 2 MB RAM preinstalled<\/li>\n
  • supports only 2, 4 or 8 MB configurations, it cannot be set to 6 MB<\/li>\n
  • accepts 1M\u00d71 DIPs only, 120 ns or faster<\/li>\n
  • no waitstates<\/li>\n<\/ul>\n

    jumper settings<\/i><\/p>\n\n\n\n
    J1
    \nON
    \nON
    \nOFF
    \nOFF<\/td>\n    		J2
    \nON
    \nOFF
    \nON
    \nOFF<\/td>\n    		– 2 MB
    \n– 4 MB (U16-U32 and U55-U62)
    \n– diagnostic mode
    \n– 8 MB<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    notes<\/i><\/p>\n

      \n
    • some revision 3 boards have 8 MB pre-installed from factory with DIP chips soldered in (no sockets)<\/li>\n<\/ul>\n\n\t\t