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BFM_Cobra3 - attempt to improve non-MPEG hardware parts. #14588

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BFM_Cobra3 - attempt to improve non-MPEG hardware parts. #14588

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706d696
New systems marked not working
james-wallace-ghub Nov 26, 2025
6dc7d1c
bfm_cobra3.cpp Cleanup (nw)
james-wallace-ghub Nov 29, 2025
23d045e
bfm_cobra3.cpp: Missed unused variable (nw)
james-wallace-ghub Nov 29, 2025
38b2b37
68340.cpp: Added restriction to internal base read based on manual. F…
james-wallace-ghub Dec 4, 2025
6bc9cdc
68340.cpp: fix return for out of space register access
james-wallace-ghub Dec 10, 2025
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12 changes: 10 additions & 2 deletions src/devices/machine/68340.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -130,8 +130,16 @@ uint8_t m68340_cpu_device::int_ack(offs_t offset)
uint16_t m68340_cpu_device::m68340_internal_base_r(offs_t offset, uint16_t mem_mask)
{
if (!machine().side_effects_disabled())
LOGMASKED(LOG_BASE, "%08x m68340_internal_base_r %08x, (%08x)\n", m_ppc, offset*2,mem_mask);
return ((!BIT(offset, 0) ? (m_m68340_base >> 16): m_m68340_base)) & 0xffff;
LOGMASKED(LOG_BASE, "%08x m68340_internal_base_r %08x, (%08x) (%08x)\n", m_ppc, offset*2,mem_mask, m_sfc);

if (m_sfc==0x7)
{
return ((!BIT(offset, 0) ? (m_m68340_base >> 16): m_m68340_base)) & 0xffff;
}
else
{
return -1;
}
}

void m68340_cpu_device::m68340_internal_base_w(offs_t offset, uint16_t data, uint16_t mem_mask)
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