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The BSD2.11 RP06 bootloader requires 0176700 to be in R1 when invoked.
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Folkert van Heusden 2025-04-06 11:12:38 +02:00
parent 8a0cee1b96
commit 48b1da252e
Signed by untrusted user who does not match committer: folkert
GPG key ID: 6B6455EDFEED3BD1
1 changed files with 1 additions and 33 deletions
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34
loaders.cpp
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@ -53,38 +53,6 @@ void set_boot_loader(bus *const b, const bootloader_t which)
0005007
};
#if 0
// from https://github.com/amakukha/PyPDP11.git
offset = 02000;
start = 02002;
static uint16_t rk05_code[] = {
0042113, // "KD"
0012706, 02000, // MOV #boot_start, SP
0012700, 0000000, // MOV #unit, R0 ; unit number
0010003, // MOV R0, R3
0000303, // SWAB R3
0006303, // ASL R3
0006303, // ASL R3
0006303, // ASL R3
0006303, // ASL R3
0006303, // ASL R3
0012701, 0177412, // MOV #RKDA, R1 ; csr
0010311, // MOV R3, (R1) ; load da
0005041, // CLR -(R1) ; clear ba
0012741, 0177000, // MOV #-256.*2, -(R1) ; load wc
0012741, 0000005, // MOV #READ+GO, -(R1) ; read & go
0005002, // CLR R2
0005003, // CLR R3
0012704, 02020, // MOV #START+20, R4
0005005, // CLR R5
0105711, // TSTB (R1)
0100376, // BPL .-2
0105011, // CLRB (R1)
0005007 // CLR PC
};
#endif
bl = rk05_code;
size = sizeof(rk05_code)/sizeof(rk05_code[0]);
@ -144,7 +112,7 @@ void set_boot_loader(bus *const b, const bootloader_t which)
start = offset = 02000;
static const uint16_t rp06_code[] = {
012700, 0176704, 012740, 0177000, 012740, 000071, 012700, 0, 000110, 000000
012701, 0176700, 012700, 0176704, 012740, 0177000, 012740, 000071, 012700, 0, 000110, 000000
};