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Boot ROMs, again

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Make the boot ROMs a bit easier to maintain.

Add assertion that the two variants of each are the same size.

Add offsets to the comments so it's easier to see where jumps are going.
This commit is contained in:
Timothe Litt
2013-06-19 06:05:57 -04:00
parent 9681843fb5
commit c3b1d9abdd
2 changed files with 41 additions and 22 deletions
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21
PDP10/pdp10_tu.c
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@@ -92,6 +92,7 @@
#include "pdp10_defs.h"
#include "sim_tape.h"
#include <assert.h>
#define TU_NUMFM 1 /* #formatters */
#define TU_NUMDR 8 /* #drives */
@@ -1264,7 +1265,7 @@ static const d10 boot_rom_dec[] = {
INT64_C(0200300000000)+FE_UNIT, /* move 6,FE_UNIT ; fmtr */
INT64_C(0713301000010), /* wrio 6,10(1) ; ->MTCS2 */
INT64_C(0200240000000)+FE_MTFMT, /* move 5,FE_MTFMT ; slave, dens, fmt */
INT64_C(0200240000000)+FE_MTFMT, /*10 move 5,FE_MTFMT ; slave, dens, fmt */
INT64_C(0713241000032), /* wrio 5,32(1) ; ->MTTC */
INT64_C(0712001000012), /* rdio 0,12(1) ; MTFS */
INT64_C(0640000010600), /* trc 0,10600 ; MOL + DPR + RDY */
@@ -1273,7 +1274,7 @@ static const d10 boot_rom_dec[] = {
INT64_C(0201000000011), /* movei 0,11 ; clr+go */
INT64_C(0713001000000), /* wrio 0,0(1) ; ->MTCS1 */
INT64_C(0201000000377), /* movei 0,1 ; Formatter */
INT64_C(0201000000377), /*20 movei 0,1 ; Formatter */
INT64_C(0242006000000), /* lsh 0,(6) ; attn bit */
INT64_C(0713001000016), /* wrio 0,16(1) ; Clear on-line attn */
INT64_C(0201100000031), /* movei 2,31 ; space f */
@@ -1282,6 +1283,7 @@ static const d10 boot_rom_dec[] = {
INT64_C(0265740377030), /* jsp 17,tpop ; read boot */
INT64_C(0254000001000), /* jrst 1000 ; start */
/*30 */
INT64_C(0713241000032), /* tpop:wrio 5,32(1) ; ->MTTC */
INT64_C(0201000000011), /* movei 0,11 ; clr+go */
INT64_C(0713001000000), /* wrio 0,0(1) ; ->MTCS1 */
@@ -1291,7 +1293,7 @@ static const d10 boot_rom_dec[] = {
INT64_C(0713201000004), /* wrio 4,4(1) ; ->MTBA */
INT64_C(0400400000000), /* setz 10, ; max fc */
INT64_C(0713401000006), /* wrio 10,6(1) ; ->MTFC */
INT64_C(0713401000006), /*40 wrio 10,6(1) ; ->MTFC */
INT64_C(0713301000010), /* wrio 6,10(1) ; ->MTCS2 reset errs */
INT64_C(0713241000032), /* wrio 5,32(1) ; ->MTTC reset errs */
INT64_C(0713101000000), /* wrio 2,0(1) ; OP ->MTCS1 */
@@ -1300,7 +1302,7 @@ static const d10 boot_rom_dec[] = {
INT64_C(0254000377044), /* jrst .-2 ; loop */
INT64_C(0606340040000), /* trnn 7,40000 ; test err */
INT64_C(0254017000000), /* jrst 0(17) ; return */
INT64_C(0254017000000), /*50 jrst 0(17) ; return */
INT64_C(0712341000014), /* rdio 7,14(1) ; read err */
INT64_C(0302340001000), /* caie 7,1000 ; fce? */
INT64_C(0254200377053), /* halt . */
@@ -1317,7 +1319,7 @@ static const d10 boot_rom_its[] = {
INT64_C(0200300000000)+FE_UNIT, /* move 6,FE_UNIT ; fmtr */
INT64_C(0714301000010), /* iowri 6,10(1) ; ->MTFS */
INT64_C(0200240000000)+FE_MTFMT, /* move 5,FE_MTFMT ; slave, dens, fmt */
INT64_C(0200240000000)+FE_MTFMT, /*20 move 5,FE_MTFMT ; slave, dens, fmt */
INT64_C(0714241000032), /* iowri 5,32(1) ; ->MTTC */
INT64_C(0710001000012), /* iordi 0,12(1) ; read FS */
INT64_C(0640000010600), /* trc 0,10600 ; MOL + DPR + RDY */
@@ -1326,7 +1328,7 @@ static const d10 boot_rom_its[] = {
INT64_C(0201000000011), /* movei 0,11 ; clr+go */
INT64_C(0714001000000), /* iowri 0,0(1) ; ->MTCS1 */
INT64_C(0201000000377), /* movei 0,1 ; Formatter */
INT64_C(0201000000377), /*30 movei 0,1 ; Formatter */
INT64_C(0242006000000), /* lsh 0,(6) ; attn bit */
INT64_C(0714001000016), /* iowri 0,16(1) ; Clear on-line attn */
INT64_C(0201100000031), /* movei 2,31 ; space f */
@@ -1335,6 +1337,7 @@ static const d10 boot_rom_its[] = {
INT64_C(0265740377030), /* jsp 17,tpop ; read boot */
INT64_C(0254000001000), /* jrst 1000 ; start */
/*30 */
INT64_C(0714241000032), /* tpop:iowri 5,32(1) ; ->MTTC */
INT64_C(0201000000011), /* movei 0,11 ; clr+go */
INT64_C(0714001000000), /* iowri 0,0(1) ; ->MTCS1 */
@@ -1344,7 +1347,7 @@ static const d10 boot_rom_its[] = {
INT64_C(0714201000004), /* iowri 4,4(1) ; ->MTBA */
INT64_C(0400400000000), /* setz 10, ; max fc */
INT64_C(0714401000006), /* iowri 10,6(1) ; ->MTFC */
INT64_C(0714401000006), /*40 iowri 10,6(1) ; ->MTFC */
INT64_C(0714301000010), /* iowri 6,10(1) ; ->MTFS */
INT64_C(0714241000032), /* iowri 5,32(1) ; ->MTTC */
INT64_C(0714101000000), /* iowri 2,0(1) ; ->MTCS1 */
@@ -1353,7 +1356,7 @@ static const d10 boot_rom_its[] = {
INT64_C(0254000377044), /* jrst .-2 ; loop */
INT64_C(0606340040000), /* trnn 7,40000 ; test err */
INT64_C(0254017000000), /* jrst 0(17) ; return */
INT64_C(0254017000000), /*50 jrst 0(17) ; return */
INT64_C(0710341000014), /* iordi 7,14(1) ; read err */
INT64_C(0302340001000), /* caie 7,1000 ; fce? */
INT64_C(0254200377053), /* halt . */
@@ -1374,7 +1377,7 @@ if (!(uptr->flags & UNIT_ATT))
M[FE_RHBASE] = tu_dib.ba;
M[FE_UNIT] = 0; /* Only one formatter in this implementation */
assert (sizeof(boot_rom_dec) == sizeof(boot_rom_its);
assert (sizeof(boot_rom_dec) == sizeof(boot_rom_its));
M[FE_MTFMT] = (unitno & TC_M_UNIT) | (TC_1600 << TC_V_DEN) | (TC_10C << TC_V_FMT);
tu_unit[unitno].pos = 0;