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Amiga Technical References
On the A2630 card there are four jumpers near ROM : ______________ | | | | | | |______________| ______________ | | | | | | |______________| Off Off Off Off o o o o o o o o J302 J303 J304 J301 ^ ^ ^ ^ | | | l_ = MEG4, ON for 2Megs, OFF for 4Megs. | | | | | l______ = B2000, OFF normal, ON for old A2000 w/68000 removed. | | | l___________ = AUTO, OFF ram is autoconfig'd, ON ram is disabled. | l________________ = OSMODE, OFF autoboots AmigaDOS, ON autoboots UNIX. There is also a jumper under the heat shield between the 68030 & 68882. On o o-o 3 2 1 J202 = ON 1-2, 68882 FPU uses same 25MHz clock as 68030. ON 2-3, 68882 FPU uses separate oscillator added in U203.