ERB-4000 (メルコ)

Epson desktop machine, PC-386 / V / S / G / GS / GE, PC-486GF / GR / GR + / GRSuper
Additional RAM base board for (4MB).On board with 8 stations dip switch
There is one rotary switch and two triple jumper switches. Two SIMM slots
Only Epson-spec SIMMs can be attached to (1MB, 2MB, 4MB SIMMs can be used).
Except for PC-386GE, SIMMs of the same capacity are used in pairs.

· Rotary switch SW1, 8-station dip switch SW2 (1-2): Memory on ERB
　Specify start address of
The following shows the amount of memory counted at startup: ■ SW1 ■ SW2 (1-2) ■ ERB start
Address order

640 + 1024KB ■ 2 ■ ON-ON ■ 200000h (default setting)
640 + 2048KB ■ 3 ■ ON-ON ■ 300000h
640 + 3072KB ■ 4 ■ ON-ON ■ 400000h
640 + 4096 KB ■ 5 ■ ON-ON ■ 500000 h
640 + 5120KB ■ 6 ■ ON-ON ■ 600000h
640 + 6144KB ■ 7 ■ ON-ON ■ 700000h
640 + 7168KB ■ 8 ■ ON-ON ■ 800000h
640 + 8192KB ■ 9 ■ ON-ON ■ 900000h
640 + 9216KB ■ A ■ ON-ON ■ A00000h
640 + 10 240KB ■ B ■ ON-ON ■ B 00000 h
640 + 1264 KB ■ C ■ ON-ON ■ C 00000 h
640 + 12288KB ■ D ■ ON-ON ■ D 00000 h
640 + 13312 KB ■ E ■ ON-ON ■ E00000 h
640 + 14336KB ■ F ■ ON-ON ■ F 00000 h
640 + 15360KB ■ 0 ■ OFF-ON ■ 1000000h
640 + 16384KB ■ 1 ■ OFF-ON ■ 1100000h
640 + 17408KB ■ 2 ■ OFF-ON ■ 1200000h
640 + 18432KB ■ 3 ■ OFF-ON ■ 1300000h
640 + 19456KB ■ 4 ■ OFF-ON ■ 1400000h
640 + 20480KB ■ 5 ■ OFF-ON ■ 1500000h
640 + 21 504KB ■ 6 ■ OFF-ON ■ 1600000h
640 + 22528KB ■ 7 ■ OFF-ON ■ 1700000h
640 + 23552KB ■ 8 ■ OFF-ON ■ 1800000h
640 + 24 576KB ■ 9 ■ OFF-ON ■ 1900000h
640 + 25600KB ■ A ■ OFF-ON ■ 1A00000h
640 + 26624KB ■ B ■ OFF-ON ■ 1B00000h
640 + 27648KB ■ C ■ OFF-ON ■ 1C00000h
640 + 28672KB ■ D ■ OFF-ON ■ 1D00000h
640 + 29 696KB ■ E ■ OFF-ON ■ 1E00000h
640 + 30720KB ■ F ■ OFF-ON ■ 1F00000h
640 + 31 744KB ■ 0 ■ ON-OFF ■ 2000000h
640 + 32768KB ■ 1 ■ ON-OFF ■ 2100000h
640 + 33 792KB ■ 2 ■ ON-OFF ■ 2200000h
640 + 34816KB ■ 3 ■ ON-OFF ■ 230000h
640 + 35840KB ■ 4 ■ ON-OFF ■ 2400000h
640 + 36864KB ■ 5 ■ ON-OFF ■ 2500000h
640 + 37888KB ■ 6 ■ ON-OFF ■ 2600000h
640 + 38 912KB ■ 7 ■ ON-OFF ■ 2700000h
640 + 39936KB ■ 8 ■ ON-OFF ■ 2800000h
640 + 40960KB ■ 9 ■ ON-OFF ■ 2900000h
640 + 41984KB ■ A ■ ON-OFF ■ 2A00000h
640 + 43008KB ■ B ■ ON-OFF ■ 2B 00000 h
640 + 44032KB ■ C ■ ON-OFF ■ 2C00000h
640 + 45056KB ■ D ■ ON-OFF ■ 2D00000h
640 + 46080KB ■ E ■ ON-OFF ■ 2E00000h
640 + 47104KB ■ F ■ ON-OFF ■ 2F 00000h
640 + 48 128KB ■ 0 ■ OFF-OFF ■ 3000000h
640 + 49152KB ■ 1 ■ OFF-OFF ■ 3100000h
640 + 50176KB ■ 2 ■ OFF-OFF ■ 3200000h
640 + 51 200KB ■ 3 ■ OFF-OFF ■ 3300000h
640 + 52224KB ■ 4 ■ OFF-OFF ■ 3400000h
640 + 53248KB ■ 5 ■ OFF-OFF ■ 3500000h
640 + 54272KB ■ 6 ■ OFF-OFF ■ 3600000h
640 + 55 296KB ■ 7 ■ OFF-OFF ■ 3700000h
640 + 56,320KB ■ 8 ■ OFF-OFF ■ 3800000h
640 + 57344KB ■ 9 ■ OFF-OFF ■ 3900000h
640 + 58368KB ■ A ■ OFF-OFF ■ 3A00000h
640 + 593 32 B ■ B ■ OFF-OFF ■ 3 B 00000 h
640 + 60416KB ■ C ■ OFF-OFF ■ 3C00000h
640 + 61440KB ■ D ■ OFF-OFF ■ 3D00000h
640 + 62 644KB ■ E ■ OFF-OFF ■ 3E00000h
640 + 63448KB ■ F ■ OFF-OFF ■ 3F00000h

・ 8 stations dip switch SW2 (3-4-5-6-7-8): With / without parity check, body
　Designation of model
3: Specify parity check
　ON = Do not check parity
　OFF = Perform parity check
4: Specify the model
　ON = Used with PC-386S, PC-486GR / GR + / GRSuper
　OFF = Used with PC-386 / V / G / GS, PC-486GF
5-6-7: System reservation: Always OFF-OFF-OFF
8: Designation of body model
　Used with ON = PC-386G
　OFF = Used with PC-386 / V / S / GE / GS and PC-486GF / GR / GR + / GRSuper

・ Three jumper switches JP1, JP2: Do not change
Both JP1 and JP2 should be used with the factory settings (1-2 short).