Commodore 128 Programmer's Reference Manual page 693

APPENDIXES 683
! 1
i I-
27
Function:
SELMEM
Bank:
Input:
Output:
This function is called with C = 000H if the system time in the
SCB needs to be updated by the clock. If C = 0FFH, then the
time in the SCB has just been updated and the clock is
set to the SCB time. NOTE: HL and DE MUST be preserved.
Oor 1
A = memory bank
None
Function: Changes the current memory bank. This code MUST be in
common memory.
NOTE: ONLY A can be changed.
28 SETBNK
Bank:
Input:
Output:
Function:
29 XMOVE
Bank:
Input:
Output:
Function:
30 USERF
Banks
Input:
Output:
Function:
31
32
RESERV1
Bank:
Input:
Output:
Function:
RESERV2
Bank:
Input:
Output:
Function:
0
A = DMA memory bank
None
Sets the DMA bank for the next READ/WRITE operation.
0
B = destination bank
C = source bank
None
Provides the system with the ability to perform memory-to-
memory DMA through the entire system space.
Oor 1
A = function number, L = subtraction number
Outputs depend on the called function or subfunction.
This calls the user functions and 8502 BIOS routines, which
are defined in the Commodore 128 System Dependent User
Function section.
N/A
N/A
N/A
Not available to the user.
N/A
N/A
N/A
Not available to the user.