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sc499: corrected regressions that prevented writing [Hans Ostermeyer]

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This commit is contained in:
arbee 2016-11-20 16:58:11 -05:00
parent eee0e0815e
commit 792b4fe159
1 changed files with 9 additions and 3 deletions
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10
src/devices/bus/isa/sc499.cpp
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@ -1257,6 +1257,10 @@ void sc499_device::write_block()
check_tape(); check_tape();
} }
// write block to image file as well
m_image->fseek((int64_t) m_tape_pos * SC499_CTAPE_BLOCK_SIZE, SEEK_SET);
m_image->fwrite(&m_ctape_block_buffer[0], SC499_CTAPE_BLOCK_SIZE);
m_image->write_block(m_tape_pos, &m_ctape_block_buffer[0]); m_image->write_block(m_tape_pos, &m_ctape_block_buffer[0]);
m_ctape_block_count = m_tape_pos; m_ctape_block_count = m_tape_pos;
m_ctape_block_index = 0; m_ctape_block_index = 0;
@ -1313,7 +1317,7 @@ void sc499_ctape_image_device::device_config_complete()
uint8_t *sc499_ctape_image_device::read_block(int block_num) uint8_t *sc499_ctape_image_device::read_block(int block_num)
{ {
// access beyond end of tape cart // access beyond end of tape cart
if (m_ctape_data.size() <= (block_num + 1) * SC499_CTAPE_BLOCK_SIZE) if (m_ctape_data.size() < (block_num + 1) * SC499_CTAPE_BLOCK_SIZE)
return nullptr; return nullptr;
else else
return &m_ctape_data[block_num * SC499_CTAPE_BLOCK_SIZE]; return &m_ctape_data[block_num * SC499_CTAPE_BLOCK_SIZE];
@ -1321,7 +1325,9 @@ uint8_t *sc499_ctape_image_device::read_block(int block_num)
void sc499_ctape_image_device::write_block(int block_num, uint8_t *ptr) void sc499_ctape_image_device::write_block(int block_num, uint8_t *ptr)
{ {
if (!(m_ctape_data.size() <= (block_num + 1) * SC499_CTAPE_BLOCK_SIZE)) if ((m_ctape_data.size() < (block_num + 1) * SC499_CTAPE_BLOCK_SIZE))
m_ctape_data.resize((block_num + 1) * SC499_CTAPE_BLOCK_SIZE);
memcpy(&m_ctape_data[block_num * SC499_CTAPE_BLOCK_SIZE], ptr, SC499_CTAPE_BLOCK_SIZE); memcpy(&m_ctape_data[block_num * SC499_CTAPE_BLOCK_SIZE], ptr, SC499_CTAPE_BLOCK_SIZE);
} }