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-rw-r--r--src/mess/drivers/zapcomputer.c156
1 files changed, 0 insertions, 156 deletions
diff --git a/src/mess/drivers/zapcomputer.c b/src/mess/drivers/zapcomputer.c
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--- a/src/mess/drivers/zapcomputer.c
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@@ -1,156 +0,0 @@
-// license:GPL2+
-// copyright-holders:FelipeSanches
-/*
- ZAP - Z80 Applications Processor
-
- driver by: Felipe Correa da Silva Sanches <juca@members.fsf.org>
-
- Based on the technical descriptions and
- assembly listings of the book:
-
- "Build Your Own Z80 Microcomputer"
- by Steve Ciarcia (1981)
- published by BYTE/McGRAW-HILL
-
- Basic usage instructions:
- SHIFT + 0: view and edit memory values
- SHIFT + 1: view and edit register values
- SHIFT + 2: execution mode
-
- For more info, please check chapter 6 "Monitor software" in the book
- and/or the assembly listings of the ZAP monitor software
- avaliable at appendix D.
-
- Currently missing features in this driver:
- * hookup RS232 support
- * maybe also support video terminal described in chapter 9
-*/
-
-#include "includes/zapcomputer.h"
-#include "zapcomputer.lh"
-
-static unsigned char decode7seg(int data){
- //These are bit patterns representing the conversion of 4bit values
- //into the status of the segments of the 7 segment displays
- //controlled by a 82S23 PROM
-
- unsigned char patterns[16] = {
- 0x77, 0x41, 0x6e, 0x6b,
- 0x59, 0x3b, 0x3f, 0x61,
- 0x7f, 0x79, 0x7d, 0x1f,
- 0x36, 0x4f, 0x3e, 0x3c
- };
-
- // Bit order for the FAIRCHILD FND-70
- // 7-SEGMENT LCD: . g f e d c b a
- return BITSWAP8(patterns[data & 0x0F], 7, 3, 4, 2, 1, 0, 6, 5);
-}
-
-WRITE8_MEMBER(zapcomp_state::display_7seg_w){
- switch (offset){
- case 0: //Port 0x05 : address HI
- output_set_digit_value(0, decode7seg(data >> 4));
- output_set_digit_value(1, decode7seg(data));
- break;
- case 1: //Port 0x06 : address LOW
- output_set_digit_value(2, decode7seg(data >> 4));
- output_set_digit_value(3, decode7seg(data));
- break;
- case 2: //Port 0x07 : data
- output_set_digit_value(4, decode7seg(data >> 4));
- output_set_digit_value(5, decode7seg(data));
- break;
- default:
- break;
- }
-}
-
-READ8_MEMBER(zapcomp_state::keyboard_r){
- unsigned char retval = 0x00;
- unsigned char special = ioport("special_keys")->read();
- unsigned int hex_keys = (ioport("hex_keys_2")->read() << 8) | ioport("hex_keys_1")->read();
-
- if (special & 0x04) /* "SHIFT" key is pressed */
- retval = 0x40; /* turn on the SHIFT bit but DO NOT turn on the strobe bit */
-
- if (special & 0x02) /* "NEXT" key is pressed */
- retval |= 0xA0; /* turn on the strobe & NEXT bits */
-
- if (special & 0x01) /* "EXEC" key is pressed */
- retval |= 0x90; /* turn on the strobe & EXEC bit */
-
- for (int i=0; i<16; i++){
- if (hex_keys & (1 << i)){
- retval |= (0x80 | i); /* provide the key index in bits 3-0
- as well as turning on the strobe bit */
- }
- }
- return retval;
-}
-
-static ADDRESS_MAP_START( zapcomp_mem, AS_PROGRAM, 8, zapcomp_state )
- AM_RANGE(0x0000, 0x03ff) AM_ROM /* system monitor */
- AM_RANGE(0x0400, 0x07ff) AM_RAM /* mandatory 1 kilobyte bank #0 */
- AM_RANGE(0x0800, 0x0bff) AM_RAM /* extra 1 kilobyte bank #1 (optional) */
- AM_RANGE(0x0c00, 0x0fff) AM_RAM /* extra 1 kilobyte bank #2 (optional) */
- AM_RANGE(0x1000, 0x13ff) AM_RAM /* extra 1 kilobyte bank #3 (optional) */
- AM_RANGE(0x1400, 0x17ff) AM_RAM /* extra 1 kilobyte bank #4 (optional) */
- AM_RANGE(0x1800, 0x1bff) AM_RAM /* extra 1 kilobyte bank #5 (optional) */
- AM_RANGE(0x1c00, 0x1fff) AM_RAM /* extra 1 kilobyte bank #6 (optional) */
- AM_RANGE(0x2000, 0x23ff) AM_RAM /* extra 1 kilobyte bank #7 (optional) */
-ADDRESS_MAP_END
-
-static ADDRESS_MAP_START( zapcomp_io, AS_IO, 8, zapcomp_state )
- ADDRESS_MAP_GLOBAL_MASK(0xff)
- AM_RANGE(0x00, 0x00) AM_READ(keyboard_r)
- AM_RANGE(0x05, 0x07) AM_WRITE(display_7seg_w)
-ADDRESS_MAP_END
-
-static INPUT_PORTS_START( zapcomp )
- PORT_START("hex_keys_1")
- PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
- PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1')
- PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2')
- PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3')
- PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4')
- PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5')
- PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6')
- PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7')
-
- PORT_START("hex_keys_2")
- PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8')
- PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9')
- PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('a')
- PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('b')
- PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('c')
- PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('d')
- PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('e')
- PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('f')
-
- PORT_START("special_keys")
- PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("EXEC") PORT_CODE(KEYCODE_ENTER)
- PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("NEXT") PORT_CODE(KEYCODE_RIGHT)
- PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT)
-INPUT_PORTS_END
-
-void zapcomp_state::machine_start()
-{
-}
-
-static MACHINE_CONFIG_START( zapcomp, zapcomp_state )
- // basic machine hardware
- MCFG_CPU_ADD("maincpu", Z80, XTAL_2MHz)
- MCFG_CPU_PROGRAM_MAP(zapcomp_mem)
- MCFG_CPU_IO_MAP(zapcomp_io)
-
- /* video hardware */
- MCFG_DEFAULT_LAYOUT(layout_zapcomputer)
-MACHINE_CONFIG_END
-
-ROM_START( zapcomp )
- ROM_REGION( 0x10000, "maincpu", 0 )
- ROM_LOAD("zap.rom", 0x0000, 0x0400, CRC(cedad5d5) SHA1(576adfafbe5475004675638c1703415f8c468c6f))
-ROM_END
-
-// YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS
-COMP( 1981, zapcomp, 0, 0, zapcomp, zapcomp, driver_device, 0, "Steve Ciarcia / BYTE / McGRAW-HILL", "ZAP - Z80 Applications Processor", MACHINE_NOT_WORKING | MACHINE_NO_SOUND )