- RTM Rs0 BS Rs1 BS Rs2 BS .... C5
The RTM (register-file to memory) instruction copies the contents of
specified register file addresses to adjacent memory locations with the
indicated bank selects. The transfer is performed via Port4 of the register
file. When C5 = 1, some exceptions are conditioned by the top of the stack
(see below).
Takes cycles to execute.
Example: MASM code see below.
ADDR DISP C5 MCC STKC FLW IOC AGU ASEL BS5 P5 BS4 C4 P4
-----------------------------------------------------------------
004A: 00050000 0 - - - - - - 0 00 0 0 00
004B: 00001000 0 - - - - D - 0 00 0 0 00
004C: 00000000 0 - - - - - LAL 0 00 0 0 00
004D: 00000000 0 R2M - - - - - 0 00 0 0 00
004E: 00000000 1 - - - - - - 0 00 0 0 00 *
004F: 00000000 0 - - - - - - 0 00 0 0 00
0050: 00000000 0 - - - - - - 0 00 0 0 00
0051: 00000000 0 - - - - - - 0 00 0 0 00
0052: 00000000 0 - - - - - - 0 00 0 0 00
0053: 00000000 0 - - - - - - 0 00 0 0 00
0054: 00000000 0 - - - - - - 0 00 5 0 0a **
0055: 00000000 0 - - - - - - 0 00 6 0 0b
0056: 00000000 0 - - - - - - 0 00 7 0 0c
0057: 00000000 0 - - - - - - 0 00 7 0 0d
0058: 00000000 0 - - - - - - 0 00 4 0 0e
-----------------------------------------------------------------
* - C5
** - Bit 3 of BS4 is 1 for memory writing on the
bi-directional Port 4
Configuration Register: 0x20 (CrMemExc)
 |
| Exception No. |
Mask |
R/W Access |
Cond. |
Name |
|
| [8] |
00000000 00000100 |
RW |
C5 |
Data Segmentation Fault |
| [13] |
00000000 00002000 |
RW |
C5 |
Remote Address Invalid |
|
AGU_D ZERO 0x0005000000001000
!! Generates 0x0005000000001000
!! on the output of the accumulator
LAL 0
!! Loads the above value, which
!! encodes:
!! Len = 5, Memory address = 0x1000
RTM 0xA 1 0xB 2 0xC 3 0xD 3 0xE 0 1
!! Loads the low-bank of reg = 0xA
!! (BS4 = 1) into mem. address 0x1000,
!! the high-bank of reg = 0xB (BS4 = 2)
!! into 0x1001, both banks of reg = 0xC
!! (BS4 = 3) into 0x1002, the same with
!! reg = 0xD, but reg = 0xE is not loaded
!! into 0x1004 (BS4 = 0)
