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MT 05783 [Robbbert]

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This commit is contained in:
Robbbert 2016-06-12 00:01:38 +10:00
parent 96e08f7ae9
commit 309d977066
1 changed files with 21 additions and 13 deletions
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34
src/lib/formats/sol_cas.cpp
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@ -198,7 +198,7 @@ static int sol20_handle_cassette(INT16 *buffer, const UINT8 *bytes)
{
UINT32 sample_count = 0;
UINT32 i = 0,t = 0;
UINT8 c = 0;
UINT16 cc = 0;
sol20_byte_num = 1;
bool process_d = 0;
UINT16 length = 0;
@ -227,10 +227,10 @@ static int sol20_handle_cassette(INT16 *buffer, const UINT8 *bytes)
break;
case 'C': // carrier
{
if (c) // if this is the next file, clean up after the previous one
if (cc) // if this is the next file, clean up after the previous one
{
sample_count += sol20_output_byte(buffer, sample_count, sol20_cksm_byte); // final checksum if needed
c = 0;
cc = 0;
}
sol20_byte_num+=2; // bump to parameter
@ -242,10 +242,10 @@ static int sol20_handle_cassette(INT16 *buffer, const UINT8 *bytes)
}
case 'H': // header
{
if (c) // if this is the next file, clean up after the previous one
if (cc) // if this is the next file, clean up after the previous one
{
sample_count += sol20_output_byte(buffer, sample_count, sol20_cksm_byte); // final checksum if needed
c = 0;
cc = 0;
}
sol20_byte_num+=2; // bump to file name
@ -298,16 +298,24 @@ static int sol20_handle_cassette(INT16 *buffer, const UINT8 *bytes)
{
t = sol20_read_hex(bytes, 2);
sample_count += sol20_output_byte(buffer, sample_count, t);
sol20_cksm_byte = sol20_calc_cksm(sol20_cksm_byte, t);
c++;
length--;
if (!length)
process_d = 0;
if (!c)
cc++;
// if it's a data byte reduce remaining length and calculate checksum;
// tape supplies checksums except last one
if (cc < 257)
{
sample_count += sol20_output_byte(buffer, sample_count, sol20_cksm_byte);
length--;
sol20_cksm_byte = sol20_calc_cksm(sol20_cksm_byte, t);
}
else
// didnt need it, throw away
{
cc = 0;
sol20_cksm_byte = 0;
}
// see if finished tape
if (!length)
process_d = 0;
// bump to next byte
sol20_scan_to_hex(bytes);
}
}
@ -318,7 +326,7 @@ static int sol20_handle_cassette(INT16 *buffer, const UINT8 *bytes)
}
}
if (c) // reached the end of the svt file
if (cc) // reached the end of the svt file
sample_count += sol20_output_byte(buffer, sample_count, sol20_cksm_byte); // final checksum if needed
return sample_count;