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banksets preliminary

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This commit is contained in:
msaarna@gmail.com 2021-11-30 19:53:55 -05:00
parent 474c4df6cc
commit 03deab602a
4 changed files with 25 additions and 4 deletions
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2
scripts/src/bus.lua
View file

@ -25,6 +25,8 @@ if (BUSES["A7800"]~=null) then
MAME_DIR .. "src/devices/bus/a7800/hiscore.h",
MAME_DIR .. "src/devices/bus/a7800/xm.cpp",
MAME_DIR .. "src/devices/bus/a7800/xm.h",
MAME_DIR .. "src/devices/bus/a7800/bankset.cpp",
MAME_DIR .. "src/devices/bus/a7800/bankset.h",
MAME_DIR .. "src/devices/bus/a7800/cpuwiz.cpp",
MAME_DIR .. "src/devices/bus/a7800/cpuwiz.h",
}

3
src/devices/bus/a7800/a78_carts.h
View file

@ -9,6 +9,7 @@
#include "xm.h"
#include "hiscore.h"
#include "cpuwiz.h"
#include "bankset.h"
static SLOT_INTERFACE_START(a7800_cart)
SLOT_INTERFACE_INTERNAL("a78_rom", A78_ROM)
@ -22,6 +23,8 @@ static SLOT_INTERFACE_START(a7800_cart)
SLOT_INTERFACE_INTERNAL("a78_act", A78_ROM_ACTIVISION)
SLOT_INTERFACE_INTERNAL("a78_hsc", A78_HISCORE)
SLOT_INTERFACE_INTERNAL("a78_xm", A78_XM) // the actual XM expansion (as passthru)
SLOT_INTERFACE_INTERNAL("a78_bankset_sg", A78_ROM_BANKSET_SG)
SLOT_INTERFACE_INTERNAL("a78_bankset_sg_bankram", A78_ROM_BANKSET_SG_BANKRAM)
SLOT_INTERFACE_INTERNAL("a78_megacart", A78_ROM_MEGACART)
SLOT_INTERFACE_INTERNAL("a78_versa", A78_ROM_VERSABOARD)
// cart variants with a POKEY at 0x0450 (typically a VersaBoard variant, or an homebrew pcb)

22
src/devices/bus/a7800/a78_slot.cpp
View file

@ -261,7 +261,7 @@ int a78_cart_slot_device::validate_header(int head, bool log) const
head &= 0xff00;
}
if ((head & 0xff00) > 0x300)
if ((head & 0xff00) > 0x2000)
{
if (log)
{
@ -301,6 +301,8 @@ static const a78_slot slot_list[] =
{ A78_ACTIVISION, "a78_act" },
{ A78_HSC, "a78_hsc" },
{ A78_XM_BOARD, "a78_xm" },
{ A78_BANKSET_SG, "a78_bankset_sg" },
{ A78_BANKSET_SG_BANKRAM, "a78_bankset_sg_bankram" },
{ A78_MEGACART, "a78_megacart" },
{ A78_VERSABOARD, "a78_versa" },
{ A78_TYPE0_POK450, "a78_p450_t0" },
@ -381,7 +383,7 @@ image_init_result a78_cart_slot_device::call_load()
// let's try to auto-fix some common errors in the header
mapper = validate_header((head[53] << 8) | head[54], true);
switch (mapper & 0x2e)
switch (mapper & 0x202e)
{
case 0x0000:
m_type = BIT(mapper, 0) ? A78_TYPE1 : A78_TYPE0;
@ -402,6 +404,12 @@ image_init_result a78_cart_slot_device::call_load()
else
m_type = A78_VERSABOARD;
break;
case 0x2002:
m_type = A78_BANKSET_SG;
break;
case 0x2022:
m_type = A78_BANKSET_SG_BANKRAM;
break;
}
// check if cart has a POKEY at $0450 (typically a VersaBoard variant)
@ -450,7 +458,7 @@ image_init_result a78_cart_slot_device::call_load()
if (m_type == A78_TYPE6 || m_type == A78_TYPE8)
m_cart->ram_alloc(0x4000);
if (m_type == A78_MEGACART || (m_type >= A78_VERSABOARD && m_type <= A78_VERSA_POK450))
if (m_type == A78_MEGACART || (m_type == A78_BANKSET_SG_BANKRAM) || (m_type >= A78_VERSABOARD && m_type <= A78_VERSA_POK450))
m_cart->ram_alloc(0x8000);
if (m_type == A78_XM_BOARD)
m_cart->ram_alloc(0x20000);
@ -517,7 +525,7 @@ std::string a78_cart_slot_device::get_default_card_software(get_default_card_sof
// let's try to auto-fix some common errors in the header
mapper = validate_header((head[53] << 8) | head[54], false);
switch (mapper & 0x2e)
switch (mapper & 0x202e)
{
case 0x0000:
type = BIT(mapper, 0) ? A78_TYPE1 : A78_TYPE0;
@ -538,6 +546,12 @@ std::string a78_cart_slot_device::get_default_card_software(get_default_card_sof
else
type = A78_VERSABOARD;
break;
case 0x2002:
type = A78_BANKSET_SG;
break;
case 0x2022:
type = A78_BANKSET_SG_BANKRAM;
break;
}
// check if cart has a POKEY at $0450 (typically a VersaBoard variant)!

2
src/devices/bus/a7800/a78_slot.h
View file

@ -28,6 +28,8 @@ enum
A78_HSC, // Atari HighScore cart
A78_XB_BOARD, // A7800 Expansion Board (it shall more or less apply to the Expansion Module too, but this is not officially released yet)
A78_XM_BOARD, // A7800 XM Expansion Module (theoretical specs only, since this is not officially released yet)
A78_BANKSET_SG,
A78_BANKSET_SG_BANKRAM,
A78_MEGACART, // Homebrew by CPUWIZ, consists of SuperGame bank up to 512K + 32K RAM banked
A78_VERSABOARD = 0x10, // Homebrew by CPUWIZ, consists of SuperGame bank up to 256K + 32K RAM banked
// VersaBoard variants configured as Type 1/3/A or VersaBoard + POKEY at $0450