Commodore Amiga A1000 - Input Modes; BIT NAMES on READ-Register; BIT NAMES on WRITE-Register

FORCE LOAD
A strobe bit allows the timer latch to be loaded into the timer counter
at any time, whether the timer is running or not.
INPUT MODES
Control bits allow selection of the dock used to decrement the timer.
Timer A can count 02 clock pulses or external pulses applied to the CNT
pin. Timer B can count 02 pulses, external CNT pulses, timer A underflow
pulses, or timer A underflow pulses while the CNT pin is held high.
The timer latch is loaded into the timer on any timer underflow, on a
force load, or following a write to the high byte of the pre-scalar
while the timer is stopped. If the timer is running, a write to the high
byte will load the timer latch but not the counter.
BIT NAMES on READ-Register
REG NAME D7 D6 D5 D4 D3 D2 D1 D0
--- ---- -- -- -- -- -- -- -- --
4 TALO TAL7 TAL6 TAL5 TAL4 TAL3 TAL2 TAL1 TAL0
5 TAHI TAH7 TAH6 TAH5 TAH4 TAH3 TAH2 TAH1 TAH0
6 TBLO TBL7 TBL6 TBLS TBL4 TBL3 TBL2 TBL1 TBL0
7 TBHI TBH7 TBH6 TBH5 TBH4 TBH3 TBH2 TBH1 TBH0
BIT NAMES on WRITE-Register
REG NAME D7 D6 D5 D4 D3 D2 D1 D0
--- ---- -- -- -- -- -- -- -- --
4 TALO PAL7 PAL6 PAL5 PAL4 PAL3 PAL2 PAL1 PAL0
5 TAHI PAH7 PAH6 PAH5 PAH4 PAH3 PAH2 PAH1 PAH0
6 TBLO PBL7 PBL6 PBL5 PBL4 PBL3 PBL2 PBL1 PBL0
7 TBHI PBH7 PBH6 PBH5 PBH4 PBH3 PBH2 PBH1 PBH0
- 322 Appendix F -