Command Station RAM usage version 01

RangeContains
0x2000 - 0x20FFBuffers addressed in linear space. Others addressed by bank
0x2100 - 0x21FFEngine slots 0-15
0x2200 - 0x22FFEngine slots 16-31
0x2300 - 0x23EFEngine slots 32-44
Direct banks
Locationbank 0
2000-204F		bank 1
2050-209F		bank 2
20A0-20EF		bank 3
20F0-213F		Bank 12
23C0-23EF
18455PORT TRIS LATADCADC UART1MSSPCWG1 CWG2
20
L2E_buf (2000-2017) [0]
Messages
from EUSART1
to EUSART2
 DCC_STATE
E2L_buf (20A0-20B7) [5]
Messages
from EUSART2
to EUSART1
buffer extension
For ESP-01 WiFi
total 64 bytes
DCC2 variables
Same order as DCC1
21DCC_SUBST
22DCC_ADDR
23
24DCC_MSG
command and up to 2 data
25
26
27DCC_AREG
28DCC_CKSM
29DCC_pr
previous timer value
2A
2BDCC_inot buffer indices
2C
DCC_buf
circular buffer of
pulse width measurements
2D
2E
2F
30
SO_buf (2060-2077) [3]
EUSART1 send only
D0,D1 6
B2 4
Linear
page 21
Engine slots
FREE
31
32
33
34
35
36
37
38SO_INp0 send from SIO_bufEO_INp0 send from ERX_buf
39SO_INp1 send from E2L_bufEO_INp1 send from L2E_buf
3ASO_INp2 send from SO_bufEO_INp2 send from ETX_buf
3BSO_otEO_ot
3CSO_limEO_lim
3DSI_inEI_in
3ESI_cksmEI_cksm
3FSI_sizeEI_size
40
SIO_buf (2020-2037) [1]
EUSART1 receive and reply
ERX_buf (20C0-20D7) [6]
EUSART2 receive and reply
41
42
43
44
45
46
47
48DGpw0H
49
4ADGpw0L
4B
4CDGpw1
4D
4E 
4F 
50
ETX_buf (2080-2097) [4]
EUSART2 send only
Unimplemented
51
52
53
54
55
56
57
58FM_FAL FRAM address lsb
buffer extension (20D8-20FF)
For ESP-01 WiFi
total 64 bytes
59FM_FAH FRAM address msb
5AFM_RAL RAM address lsb
5BFM_RAH RAM address msb
5CFM_BC byte count
5D 
5E 
5Fser_cfg Available interfaces
60
DG_buf (2040-204F) [2]
DCC generator
outgoing
message
61
62
63
64
65
66
67
68 
69 
6A 
6B 
6C 
6D 
6E 
6F 
Usageby domainaliased
70IH_t1
71IH_t2
72SV_t1
73SV_t2
74SV_t3FM_retry
75SV_t4FM_bit
76BG_t1
77FM_t1
78FM_shift
79m_stat
7Ares
7BDG_in
7CDG_ot
7DDG_state
7EDG_reg
7FEP_ctl