diff options
author | 2013-08-08 05:00:15 +0000 | |
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committer | 2013-08-08 05:00:15 +0000 | |
commit | f723b4557ce6ebaee5635c6eca2b2c45cde08259 (patch) | |
tree | 71fae03718e768ff61414be8d5343e75c19818b4 /src/emu/machine/eeprompar.h | |
parent | 2b8aca5461dd4d9b38de1ac44d5c1ebca25f367c (diff) |
Added eeprompar.*, implementing a simple interface for parallel
EEPROMs.
Created atari_eeprom_device which wraps a 2804 or 2816 EEPROM with
the standard Atari write-locking mechanism. Updated all drivers to
use this, and removed all EEPROM stuff from atarigen.
Diffstat (limited to 'src/emu/machine/eeprompar.h')
-rw-r--r-- | src/emu/machine/eeprompar.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/emu/machine/eeprompar.h b/src/emu/machine/eeprompar.h new file mode 100644 index 00000000000..860075a085a --- /dev/null +++ b/src/emu/machine/eeprompar.h @@ -0,0 +1,123 @@ +/*************************************************************************** + + eeprompar.h + + Parallel EEPROM devices. + +**************************************************************************** + + Copyright Aaron Giles + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are + met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + * Neither the name 'MAME' nor the names of its contributors may be + used to endorse or promote products derived from this software + without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR + IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT, + INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. + +***************************************************************************/ + +#pragma once + +#ifndef __EEPROMPAR_H__ +#define __EEPROMPAR_H__ + +#include "eeprom.h" + + +//************************************************************************** +// INTERFACE CONFIGURATION MACROS +//************************************************************************** + +// standard 28XX class of 8-bit parallel EEPROMs +#define MCFG_EEPROM_2804_ADD(_tag) \ + MCFG_DEVICE_ADD(_tag, EEPROM_PARALLEL_2804, 0) +#define MCFG_EEPROM_2816_ADD(_tag) \ + MCFG_DEVICE_ADD(_tag, EEPROM_PARALLEL_2816, 0) + + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + + +// ======================> eeprom_parallel_base_device + +class eeprom_parallel_base_device : public eeprom_base_device +{ +protected: + // construction/destruction + eeprom_parallel_base_device(const machine_config &mconfig, device_type devtype, const char *name, const char *tag, device_t *owner, const char *shortname, const char *file); + +public: + +protected: + // device-level overrides + virtual void device_start(); + virtual void device_reset(); +}; + + + +// ======================> eeprom_parallel_28xx_device + +class eeprom_parallel_28xx_device : public eeprom_parallel_base_device +{ +protected: + // construction/destruction + eeprom_parallel_28xx_device(const machine_config &mconfig, device_type devtype, const char *name, const char *tag, device_t *owner, const char *shortname, const char *file); + +public: + // read/write data lines - for now we cheat and ignore the control lines, assuming + // they are handled reasonably + DECLARE_WRITE8_MEMBER(write); + DECLARE_READ8_MEMBER(read); +}; + + + +//************************************************************************** +// DERIVED TYPES +//************************************************************************** + +// macro for declaring a new device class +#define DECLARE_PARALLEL_EEPROM_DEVICE(_baseclass, _lowercase, _uppercase) \ +class eeprom_parallel_##_lowercase##_device : public eeprom_parallel_##_baseclass##_device \ +{ \ +public: \ + eeprom_parallel_##_lowercase##_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); \ +}; \ +extern const device_type EEPROM_PARALLEL_##_uppercase; \ + +// standard 28XX class of 8-bit EEPROMs +DECLARE_PARALLEL_EEPROM_DEVICE(28xx, 2804, 2804) +DECLARE_PARALLEL_EEPROM_DEVICE(28xx, 2816, 2816) +DECLARE_PARALLEL_EEPROM_DEVICE(28xx, 2864, 2864) +DECLARE_PARALLEL_EEPROM_DEVICE(28xx, 28256, 28256) +DECLARE_PARALLEL_EEPROM_DEVICE(28xx, 28512, 28512) +DECLARE_PARALLEL_EEPROM_DEVICE(28xx, 28010, 28010) +DECLARE_PARALLEL_EEPROM_DEVICE(28xx, 28020, 28020) +DECLARE_PARALLEL_EEPROM_DEVICE(28xx, 28040, 28040) + +#endif |