Read a register from a Z85230
u8 read_zsreg (
|struct z8530_channel * c, |
| ||u8 reg|
Z8530 channel to read from (2 per chip)
Register to read
Use a spinlock.
Most of the Z8530 registers are indexed off the control registers.
A read is done by writing to the control register and reading the
register back. The caller must hold the lock