Sharp VL-A10K Informacje Techniczne Strona 49

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Special Registers
EPM-15 Reference Manual 43
Jumper and Status Register
JSR (READ/WRITE) 1D2h
D7 D6 D5 D4 D3 D2 D1 D0
Reserved VB-SEL SB-SEL Reserved Reserved Reserved Reserved Reserved
Table 18: Jumper and Status Register Bit Assignments
Bit Mnemonic Description
D7 Reserved
This bit has no function.
D6
VB-SEL Video BIOS Selection — Indicates the status of jumper.
0 = Jumper out, Secondary Video BIOS selected.
1 = Jumper in, Primary Video BIOS selected.
This bit is read-only.
D5 SB-SEL System BIOS Selection — Indicates the status of jumper.
0 = Jumper out, Master System BIOS selected.
1 = Jumper in, Run Time System BIOS selected.
This bit is read-only.
D4-D0 Reserved Reserved — These bits have no function.
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