HP 50g User's Reference Manual
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Brand: HP
Category: Calculator
Type: Advanced user's reference manual
Model: HP 48gII , HP 49g+ , HP 50G
Pages: 693
6-34 The Development Library
2332
REG C;
2340
REG D;
2348
REG R0;
2356
REG R1;
2364
REG R2;
2372
REG R3;
2380
REG R4;
2388
U32 D0
2392
U32 D1;
2396
U32 P, P4, P4_32; // P4 = 4*P, P4_32 = 4*P-32, use setP() to modify P.
2408
U32 ST;
2412
U32 HST;
2416
U32 carry; // 0 or !0
3420 BOOL dec; // 0→hex or 1→dec
U32 RSTK[NB_RSTK];
U32 RSTK_i; // Index for next push.
REG FIELD[32]; // Field masks.
U32 FIELD_START[32]; // Lowest nibble of the field.
U32 FIELD_LENGTH[32]; // Length of the field.
Therefore,
LDR R2 [R1 2316]
allows you to read the lower 32 bits of the Saturn register A.
LDR R2 [R1 1]
LDR R3 [R2 1]
allows you to read the first 8 nibbles at Saturn address 01008
The following file can be used to declare your Saturn chipset structure.
"!ASM
CP=0
DCCP #1028 SREAD
DCCP #1028 SWRITE
DCCP #260 SPRIORITY
DCCP 8 SRA
DCCP 8 SRB
DCCP 8 SRC
DCCP 8 SRD
DCCP 8 SR0
DCCP 8 SR1
DCCP 8 SR2
DCCP 8 SR3
DCCP 8 SR4
DCCP 4 SD0
DCCP 4 SD1
DCCP 4 SRP
DCCP 4 SRP4
DCCP 4 SRP32
DCCP 4 SST
DCCP 4 SHST
DCCP 4 SCARRY
DCCP 4 SDEC
DCCP #32 SRSCK
DCCP 4 SRSTKP
DCCP #256 SFMASK
DCCP #128 SFSTART
DCCP #128 SFLENGTH
@"