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https://github.com/cc65/cc65.git
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100 lines
4.1 KiB
C
100 lines
4.1 KiB
C
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/*****************************************************************************/
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/* */
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/* addrspace.h */
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/* */
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/* CPU address space for the 6502 simulator */
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/* */
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/* */
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/* */
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/* (C) 2003 Ullrich von Bassewitz */
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/* R<>merstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#ifndef ADDRSPACE_H
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#define ADDRSPACE_H
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* Forwards */
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struct CPUData;
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struct ChipInstance;
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/* Forwards */
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typedef struct AddressSpace AddressSpace;
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struct AddressSpace {
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struct CPU* CPU; /* Backpointer to CPU */
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unsigned Size; /* Address space size */
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struct ChipInstance* Data[1]; /* Pointer to chips, dynamically! */
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};
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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AddressSpace* NewAddressSpace (unsigned Size);
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/* Allocate a new address space and return it */
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void ASWrite (AddressSpace* AS, unsigned Addr, unsigned char Val);
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/* Write a byte to a given location */
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unsigned char ASRead (AddressSpace* AS, unsigned Addr);
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/* Read a byte from a location */
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void ASWriteCtrl (AddressSpace* AS, unsigned Addr, unsigned char Val);
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/* Write a byte to a given location */
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unsigned char ASReadCtrl (AddressSpace* AS, unsigned Addr);
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/* Read a byte from a location */
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void ASAssignChip (AddressSpace* AS, struct ChipInstance* CI,
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unsigned Addr, unsigned Range);
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/* Assign a chip instance to memory locations */
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struct ChipInstance* ASGetChip (const AddressSpace* AS, unsigned Addr);
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/* Get the chip that is located at the given address (may return NULL). */
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/* End of addrspace.h */
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#endif
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