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author Olivier Galibert <galibert@pobox.com>2020-11-12 15:52:20 +0100
committer Olivier Galibert <galibert@pobox.com>2020-11-22 19:43:52 +0100
commit574daf4e49e7e9ef4641f363bd2b007c5a414d47 (patch)
treeb43ca91fa36fbc26e54316de5a33069c85e1df9d /src/emu/emumem_hedw.h
parent8d4559070f10367dac4fb7f7721b1f3e91098c75 (diff)
Implement views, which are essentially bankdevs integrated into the
memory map system. [O. Galibert]
Diffstat (limited to 'src/emu/emumem_hedw.h')
-rw-r--r--src/emu/emumem_hedw.h26
1 files changed, 20 insertions, 6 deletions
diff --git a/src/emu/emumem_hedw.h b/src/emu/emumem_hedw.h
index 219b51d89f7..bb591e3bff8 100644
--- a/src/emu/emumem_hedw.h
+++ b/src/emu/emumem_hedw.h
@@ -3,7 +3,8 @@
// handler_entry_write_dispatch
-// dispatches an access among multiple handlers indexed on part of the address
+// dispatches an access among multiple handlers indexed on part of the
+// address and when appropriate a selected view
template<int HighBits, int Width, int AddrShift, endianness_t Endian> class handler_entry_write_dispatch : public handler_entry_write<Width, AddrShift, Endian>
{
@@ -13,6 +14,8 @@ public:
using mapping = typename inh::mapping;
handler_entry_write_dispatch(address_space *space, const handler_entry::range &init, handler_entry_write<Width, AddrShift, Endian> *handler);
+ handler_entry_write_dispatch(address_space *space, memory_view &view);
+ handler_entry_write_dispatch(handler_entry_write_dispatch<HighBits, Width, AddrShift, Endian> *src);
~handler_entry_write_dispatch();
void write(offs_t offset, uX data, uX mem_mask) const override;
@@ -35,9 +38,13 @@ public:
void enumerate_references(handler_entry::reflist &refs) const override;
- virtual const handler_entry_write<Width, AddrShift, Endian> *const *get_dispatch() const override;
+ const handler_entry_write<Width, AddrShift, Endian> *const *get_dispatch() const override;
+ void select_a(int slot) override;
+ void select_u(int slot) override;
+ void init_handlers(offs_t start_entry, offs_t end_entry, u32 lowbits, handler_entry_write<Width, AddrShift, Endian> **dispatch, handler_entry::range *ranges) override;
+ handler_entry_write<Width, AddrShift, Endian> *dup() override;
-protected:
+private:
static constexpr int Level = emu::detail::handler_entry_dispatch_level(HighBits);
static constexpr u32 LowBits = emu::detail::handler_entry_dispatch_lowbits(HighBits, Width, AddrShift);
static constexpr u32 BITCOUNT = HighBits > LowBits ? HighBits - LowBits : 0;
@@ -47,10 +54,17 @@ protected:
static constexpr offs_t HIGHMASK = make_bitmask<offs_t>(HighBits) ^ LOWMASK;
static constexpr offs_t UPMASK = ~make_bitmask<offs_t>(HighBits);
- handler_entry_write<Width, AddrShift, Endian> *m_dispatch[COUNT];
- handler_entry::range m_ranges[COUNT];
+ memory_view *m_view;
+
+ std::vector<std::array<handler_entry_write<Width, AddrShift, Endian> *, COUNT>> m_dispatch_array;
+ std::vector<std::array<handler_entry::range, COUNT>> m_ranges_array;
+
+ handler_entry_write<Width, AddrShift, Endian> **m_a_dispatch;
+ handler_entry::range *m_a_ranges;
+
+ handler_entry_write<Width, AddrShift, Endian> **m_u_dispatch;
+ handler_entry::range *m_u_ranges;
-private:
void populate_nomirror_subdispatch(offs_t entry, offs_t start, offs_t end, offs_t ostart, offs_t oend, handler_entry_write<Width, AddrShift, Endian> *handler);
void populate_mirror_subdispatch(offs_t entry, offs_t start, offs_t end, offs_t ostart, offs_t oend, offs_t mirror, handler_entry_write<Width, AddrShift, Endian> *handler);