mirror of https://github.com/pevans/erc-c.git
Refactor code to pass image type in
This commit is contained in:
Peter Evans
parent
8706a81d1f
commit
61eb880f49
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@ -3,9 +3,9 @@
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#include "vm_segment.h"
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extern int apple2_dec_dos(vm_segment *, vm_segment *);
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extern int apple2_dec_dos(int, vm_segment *, vm_segment *);
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extern int apple2_dec_nib(vm_segment *, vm_segment *);
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extern int apple2_dec_sector(vm_segment *, vm_segment *, int, int);
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extern int apple2_dec_track(vm_segment *, vm_segment *, int, int);
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extern int apple2_dec_track(int, vm_segment *, vm_segment *, int, int);
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#endif
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@ -193,7 +193,7 @@ apple2_dd_decode(apple2dd *drive)
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case DD_DOS33:
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case DD_PRODOS:
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apple2_dec_dos(drive->image, drive->data);
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apple2_dec_dos(drive->image_type, drive->image, drive->data);
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break;
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default:
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@ -7,6 +7,7 @@
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#include <stdbool.h>
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#include "apple2.dd.h"
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#include "apple2.dec.h"
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#include "apple2.enc.h"
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#include "vm_segment.h"
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@ -33,7 +34,7 @@ static vm_8bit conv6bit[] = {
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* given segment.
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*/
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int
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apple2_dec_dos(vm_segment *dest, vm_segment *src)
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apple2_dec_dos(int sectype, vm_segment *dest, vm_segment *src)
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{
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int i, doff, tracklen;
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@ -42,7 +43,7 @@ apple2_dec_dos(vm_segment *dest, vm_segment *src)
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}
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for (i = 0, doff = 0; i < ENC_NUM_TRACKS; i++) {
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tracklen = apple2_dec_track(dest, src, doff, i);
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tracklen = apple2_dec_track(sectype, dest, src, doff, i);
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// Something went wrong...
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if (tracklen != ENC_DTRACK) {
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@ -80,18 +81,18 @@ apple2_dec_nib(vm_segment *dest, vm_segment *src)
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* This should return ENC_DTRACK bytes; if not, something went wrong.
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*/
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int
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apple2_dec_track(vm_segment *dest, vm_segment *src, int doff, int track)
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apple2_dec_track(int sectype, vm_segment *dest, vm_segment *src, int doff, int track)
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{
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int soff = track * ENC_ETRACK;
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int orig = doff;
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int sect, sectlen;
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int sect, sectlen, soff;
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// Tracks have 48 bytes of filler... at least, as we build them
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// (actual disk media may have more or less, it seems). Let's skip
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// what we see.
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soff += ENC_ETRACK_HEADER;
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soff = (track * ENC_ETRACK) + ENC_ETRACK_HEADER;
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for (sect = 0; sect < ENC_NUM_SECTORS; sect++) {
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doff =
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(track * ENC_DTRACK) +
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(apple2_dd_sector_num(sectype, sect) * ENC_DSECTOR);
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// This is going to be 256, for all intents and purposes
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sectlen = apple2_dec_sector(dest, src, doff, soff + ENC_ESECTOR_HEADER);
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@ -101,13 +102,7 @@ apple2_dec_track(vm_segment *dest, vm_segment *src, int doff, int track)
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return 0;
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}
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doff += sectlen;
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soff += ENC_ESECTOR + ENC_ESECTOR_HEADER;
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}
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// Something isn't right...
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if (doff - orig != ENC_DTRACK) {
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return 0;
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soff += ENC_ESECTOR;
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}
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return ENC_DTRACK;
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@ -171,7 +166,7 @@ apple2_dec_sector(vm_segment *dest, vm_segment *src, int doff, int soff)
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// The footer_ok variable will be true if the ending byte markers we
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// expect to see are actually there.
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int footer = soff + 9 + 0x157;
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int footer = soff + 3 + 0x157;
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bool footer_ok =
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vm_segment_get(src, footer) == 0xde &&
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vm_segment_get(src, footer + 1) == 0xaa &&
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@ -186,7 +181,7 @@ apple2_dec_sector(vm_segment *dest, vm_segment *src, int doff, int soff)
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// Here we mean to convert the 6-and-2 encoded bytes back into its
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// first intermediate form
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for (i = 0; i < 0x157; i++) {
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conv[i] = conv6bit[vm_segment_get(src, soff + i + 9) & 0x7f];
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conv[i] = conv6bit[vm_segment_get(src, soff + i + 3) & 0x7f];
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}
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// Originally, we XOR'd each byte when encoding; so we need to do
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@ -38,30 +38,34 @@ static vm_8bit f_sector[] = {
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* Same as above -- ripped from apple2.enc.c
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*/
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static vm_8bit f_enc_sector[] = {
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0xd5, 0xaa, 0xad, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf5, 0xaf, 0x9a, 0xd3, 0xfd, 0xb6, 0xcb,
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0xb5, 0xfa, 0xb5, 0xe6, 0xb9, 0xf3, 0xea, 0xe7, 0xd6, 0xdb, 0xad, 0xb9, 0xfe, 0xe7, 0xfd, 0xeb,
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0xfa, 0xee, 0xf3, 0xe9, 0xb7, 0xfa, 0xde, 0xcb, 0xf6, 0xcb, 0xcb, 0x96, 0xfa, 0xec, 0xaf, 0xaf,
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0xcb, 0xcb, 0xf7, 0xee, 0xec, 0xd3, 0xd9, 0xbb, 0xf6, 0xd9, 0xab, 0xbf, 0xcb, 0xcb, 0xb2, 0xa6,
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0xcb, 0x97, 0xf4, 0xf5, 0xac, 0xed, 0xb9, 0xad, 0xae, 0xdf, 0xce, 0xe9, 0xb5, 0xb5, 0x9f, 0xab,
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0xe9, 0xbc, 0x9e, 0xde, 0x9a, 0xb3, 0xb6, 0xd3, 0xdd, 0xbe, 0xd7, 0xb2, 0xd6, 0xb5, 0xac, 0xfc,
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0xce, 0xbe, 0x9e, 0x9f, 0xaf, 0xac, 0xe6, 0xcf, 0xcb, 0x9b, 0xfe, 0xac, 0xbc, 0xdc, 0xea, 0x9e,
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0xcd, 0xdd, 0xff, 0xfe, 0x9b, 0xf2, 0xbc, 0xce, 0xcf, 0xbd, 0xdc, 0xda, 0xfe, 0xcb, 0xb4, 0xb6,
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0xdf, 0x9d, 0xb3, 0xde, 0xf2, 0x9a, 0xf9, 0x9b, 0xb5, 0xf9, 0xfc, 0xe9, 0xce, 0xff, 0xfc, 0xbd,
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0x9a, 0xad, 0xce, 0xbc, 0xbd, 0x97, 0xf4, 0xb5, 0xad, 0x9b, 0xb6, 0xfa, 0xa6, 0xf3, 0xfc, 0xb2,
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0xaf, 0xdf, 0xd7, 0xb6, 0xf4, 0xdb, 0xbd, 0xac, 0xfc, 0xfb, 0xeb, 0x96, 0xcd, 0xaf, 0xfc, 0xb6,
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0xf5, 0xf4, 0x9f, 0xdc, 0xe6, 0xb3, 0xa7, 0xba, 0xbd, 0xcb, 0xe7, 0xed, 0x9d, 0xee, 0xf5, 0xea,
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0xbb, 0xcd, 0xbd, 0xce, 0xfa, 0xf5, 0xb6, 0x97, 0xce, 0xf6, 0xbd, 0xf4, 0xad, 0xed, 0xbe, 0xfa,
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0xdc, 0xf2, 0xfb, 0xdf, 0xbd, 0xbb, 0xb2, 0xbc, 0xf4, 0xfe, 0xed, 0xa7, 0xdd, 0xab, 0xdf, 0xda,
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0xee, 0xdc, 0xfa, 0xda, 0xeb, 0xb3, 0xd7, 0xb3, 0xdd, 0xfe, 0xbd, 0xb6, 0xbf, 0xb2, 0xb3, 0xf9,
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0xda, 0xeb, 0xcd, 0xfb, 0xf2, 0xae, 0x9e, 0xdd, 0xe7, 0xec, 0xe6, 0xf3, 0xee, 0xcd, 0xd6, 0xd9,
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0xb6, 0xa6, 0x9a, 0xf5, 0xdf, 0xe9, 0xa7, 0xba, 0xf3, 0x9f, 0xf3, 0xab, 0xb2, 0x97, 0xda, 0xef,
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0xf3, 0xb5, 0xb4, 0xee, 0x9f, 0xfb, 0xff, 0xb9, 0xee, 0xdb, 0xdd, 0xaf, 0xdb, 0xce, 0xbf, 0xe7,
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0xe5, 0x97, 0xdb, 0xbe, 0xe9, 0x9f, 0x9a, 0x9b, 0xab, 0xaf, 0xdc, 0x9b, 0xcb, 0x96, 0x9b, 0xa7,
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0xfb, 0xaf, 0xf2, 0xcb, 0xea, 0xf5, 0xf9, 0xce, 0x9a, 0xfc, 0xdc, 0xef, 0xbb, 0xeb, 0xfa, 0xde,
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0xb3, 0xbb, 0xb3, 0xaf, 0xbe, 0xb9, 0xbc, 0x97, 0xad, 0xcd, 0xea, 0xba, 0x9b, 0xea, 0xfe, 0xe7,
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0xf3, 0xb5, 0xd6, 0xad, 0xf9, 0xee, 0xea, 0xe6, 0xfd, 0xdb, 0x9b, 0xfd, 0xf4, 0x96, 0xdf, 0xdf,
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0xde, 0xaa, 0xeb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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//0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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//0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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//0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xd5, 0xaa, 0x96, 0xff, 0xfe, 0xaa, 0xaa, 0xaa, 0xaa, 0xff, 0xfe, 0xde, 0xaa, 0xeb, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xd5, 0xaa, 0xad, 0xf5, 0xaf, 0x9a, 0xd3, 0xfd, 0xb6, 0xcb, 0xb5, 0xfa,
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0xb5, 0xe6, 0xb9, 0xf3, 0xea, 0xe7, 0xd6, 0xdb, 0xad, 0xb9, 0xfe, 0xe7, 0xfd, 0xeb, 0xfa, 0xee,
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0xf3, 0xe9, 0xb7, 0xfa, 0xde, 0xcb, 0xf6, 0xcb, 0xcb, 0x96, 0xfa, 0xec, 0xaf, 0xaf, 0xcb, 0xcb,
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0xf7, 0xee, 0xec, 0xd3, 0xd9, 0xbb, 0xf6, 0xd9, 0xab, 0xbf, 0xcb, 0xcb, 0xb2, 0xa6, 0xcb, 0x97,
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0xf4, 0xf5, 0xac, 0xed, 0xb9, 0xad, 0xae, 0xdf, 0xce, 0xe9, 0xb5, 0xb5, 0x9f, 0xab, 0xe9, 0xbc,
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0x9e, 0xde, 0x9a, 0xb3, 0xb6, 0xd3, 0xdd, 0xbe, 0xd7, 0xb2, 0xd6, 0xb5, 0xac, 0xfc, 0xce, 0xbe,
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0x9e, 0x9f, 0xaf, 0xac, 0xe6, 0xcf, 0xcb, 0x9b, 0xfe, 0xac, 0xbc, 0xdc, 0xea, 0x9e, 0xcd, 0xdd,
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0xff, 0xfe, 0x9b, 0xf2, 0xbc, 0xce, 0xcf, 0xbd, 0xdc, 0xda, 0xfe, 0xcb, 0xb4, 0xb6, 0xdf, 0x9d,
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0xb3, 0xde, 0xf2, 0x9a, 0xf9, 0x9b, 0xb5, 0xf9, 0xfc, 0xe9, 0xce, 0xff, 0xfc, 0xbd, 0x9a, 0xad,
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0xce, 0xbc, 0xbd, 0x97, 0xf4, 0xb5, 0xad, 0x9b, 0xb6, 0xfa, 0xa6, 0xf3, 0xfc, 0xb2, 0xaf, 0xdf,
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0xd7, 0xb6, 0xf4, 0xdb, 0xbd, 0xac, 0xfc, 0xfb, 0xeb, 0x96, 0xcd, 0xaf, 0xfc, 0xb6, 0xf5, 0xf4,
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0x9f, 0xdc, 0xe6, 0xb3, 0xa7, 0xba, 0xbd, 0xcb, 0xe7, 0xed, 0x9d, 0xee, 0xf5, 0xea, 0xbb, 0xcd,
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0xbd, 0xce, 0xfa, 0xf5, 0xb6, 0x97, 0xce, 0xf6, 0xbd, 0xf4, 0xad, 0xed, 0xbe, 0xfa, 0xdc, 0xf2,
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0xfb, 0xdf, 0xbd, 0xbb, 0xb2, 0xbc, 0xf4, 0xfe, 0xed, 0xa7, 0xdd, 0xab, 0xdf, 0xda, 0xee, 0xdc,
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0xfa, 0xda, 0xeb, 0xb3, 0xd7, 0xb3, 0xdd, 0xfe, 0xbd, 0xb6, 0xbf, 0xb2, 0xb3, 0xf9, 0xda, 0xeb,
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0xcd, 0xfb, 0xf2, 0xae, 0x9e, 0xdd, 0xe7, 0xec, 0xe6, 0xf3, 0xee, 0xcd, 0xd6, 0xd9, 0xb6, 0xa6,
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0x9a, 0xf5, 0xdf, 0xe9, 0xa7, 0xba, 0xf3, 0x9f, 0xf3, 0xab, 0xb2, 0x97, 0xda, 0xef, 0xf3, 0xb5,
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0xb4, 0xee, 0x9f, 0xfb, 0xff, 0xb9, 0xee, 0xdb, 0xdd, 0xaf, 0xdb, 0xce, 0xbf, 0xe7, 0xe5, 0x97,
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0xdb, 0xbe, 0xe9, 0x9f, 0x9a, 0x9b, 0xab, 0xaf, 0xdc, 0x9b, 0xcb, 0x96, 0x9b, 0xa7, 0xfb, 0xaf,
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0xf2, 0xcb, 0xea, 0xf5, 0xf9, 0xce, 0x9a, 0xfc, 0xdc, 0xef, 0xbb, 0xeb, 0xfa, 0xde, 0xb3, 0xbb,
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0xb3, 0xaf, 0xbe, 0xb9, 0xbc, 0x97, 0xad, 0xcd, 0xea, 0xba, 0x9b, 0xea, 0xfe, 0xe7, 0xf3, 0xb5,
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0xd6, 0xad, 0xf9, 0xee, 0xea, 0xe6, 0xfd, 0xdb, 0x9b, 0xfd, 0xf4, 0x96, 0xdf, 0xdf, 0xde, 0xaa,
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0xeb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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};
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static vm_segment *seg;
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@ -83,13 +87,13 @@ TestSuite(apple2_dec, .init = setup, .fini = teardown);
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Test(apple2_dec, sector)
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{
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vm_segment *src, *dest;
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int len;
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src = vm_segment_create(1000);
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dest = vm_segment_create(1000);
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vm_segment_copy_buf(src, f_enc_sector, 0, 0, 382);
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cr_assert_eq(apple2_dec_sector(dest, src, 0, 0), 256);
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vm_segment_copy_buf(src, f_enc_sector, 0, 0, 396);
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cr_assert_eq(apple2_dec_sector(dest, src, 0, ENC_ESECTOR_HEADER), 256);
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for (int i = 0; i < 256; i++) {
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cr_assert_eq(vm_segment_get(dest, i), f_sector[i]);
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@ -111,8 +115,8 @@ Test(apple2_dec, track)
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vm_segment_set(orig, i, 0xff);
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}
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apple2_enc_track(enc, orig, sectab, 0, 0);
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apple2_dec_track(dec, enc, 0, 0);
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apple2_enc_track(DD_DOS33, enc, orig, 0, 0);
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apple2_dec_track(DD_DOS33, dec, enc, 0, 0);
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for (i = 0; i < ENC_DTRACK; i++) {
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cr_assert_eq(vm_segment_get(dec, i),
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@ -128,10 +132,10 @@ Test(apple2_dec, dos)
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int i;
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vm_segment_fread(seg, fp, 0, _140K_);
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enc = apple2_enc_dos(seg, sectab);
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dec = vm_segment_create(1000000);
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enc = apple2_enc_dos(DD_DOS33, seg);
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dec = vm_segment_create(_140K_);
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apple2_dec_dos(dec, enc);
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cr_assert_eq(apple2_dec_dos(DD_DOS33, dec, enc), OK);
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for (i = 0; i < seg->size; i++) {
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cr_assert_eq(vm_segment_get(seg, i),
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