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Lucky Ball 96: Identify the VRAM (4x 4464 DRAM) and

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adjust the VDP accordingly.
This commit is contained in:
RobertoFresca 2018-01-08 15:50:08 -03:00
parent 5f57ed53de
commit 7e1e590abe
1 changed files with 12 additions and 6 deletions
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18
src/mame/drivers/luckybal.cpp
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@ -35,14 +35,14 @@
1x unknown sanded DIL24 IC labeled PLD-01.
1x unknown sanded DIL28 IC labeled PLD-02.
1x unknown sanded DIL20 IC labeled PLD-03 @U21.
1x unknown sanded DIL64 IC @U12.
1x unknown sanded DIL64 IC @U12 (identified as Yamaha 9938/58 VDP).
1x PPI 8255 (@U10)
3x 4099 (8-Bit Addressable Latch) @U1-U3-U5.
3x 4512 (8-Channel Data Selector) @U2-U4-U7.
1x INMOS B IMS1630K-70M (8K x 8 SRAM, DIL28)... NOTE: Replaced by UT6264CPC-70LL in another board.
4x sanded IC's (looks like RAM).
4x sanded IC's identified as 4464 (64K x 4 DRAM) @U16-U17-U18-U19, near the Yamaha 9938 for video RAM.
1x 27C512 (program ROM).
1x M27C4001 (GFX + sound samples).
@ -53,9 +53,9 @@
1x Maxim MAX691CPE (battery supervisor).
1x 21.47727 MHz. crystal.
1x 21.47727 MHz. crystal, near the Yamaha 9938/58 VDP.
1x 12.288 MHz. crystal, near the Zilog Z180.
1x 8.000 MHz.
1x 8.000 MHz. sanded crystal(measured).
1x 8 DIP Switches bank.
1x pushbutton silkscreened 'PAGE'.
@ -249,7 +249,7 @@
#define CPU_CLOCK XTAL_12_288MHz
#define VID_CLOCK XTAL_21_4772MHz
#define VDP_MEM 0x40000
#define VDP_MEM 0x20000 // 4x 4464 (64K x 4 DRAM)
#include "emu.h"
@ -287,7 +287,7 @@ ADDRESS_MAP_END
static ADDRESS_MAP_START( main_io, AS_IO, 8, luckybal_state )
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0xc0, 0xc3) AM_DEVREADWRITE("ppi8255", i8255_device, read, write)
AM_RANGE(0xe0, 0xe3) AM_DEVREADWRITE("v9938", v9938_device, read, write) // guess
AM_RANGE(0xe0, 0xe3) AM_DEVREADWRITE("v9938", v9938_device, read, write)
ADDRESS_MAP_END
/*
[:maincpu] ':maincpu' (00006): unmapped io memory write to 0010 = 00 & FF
@ -323,6 +323,12 @@ PORT_EE EQU C2H ;Port C (Low nibble) EEPROM. (0=DI, 1=CS, 2=SK)
PORTIO EQU C1H ;Port B I/O 4099 (0=A0, 1=A1, 2=A2, 3=WJ, 4=WC, 5=WP, 6=D, 7=LED)
PPI_CTRL EQU C3H ;Mode.
;---VDP
PORT0 EQU E0H
PORT1 EQU E1H
PORT2 EQU E2H
PORT3 EQU E3H
;******* 74LS273 MEMORY MAPPED **********
M_MAP EQU 90H ; [A]= Bank to select (BIT6=MEM, BIT7=EN_NMI)