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---------------------------------------------------------------------------- [GTE] Microcircuits CMOS 8/16-Bit Microprocessor Family 65sc802 is both software and pin-to-pin compatible with 6502. G65SC802 / G65SC816 Data Sheets * Features * AC/DC Characteristics * Functional Description * Addressing Modes * Notes on Instructions * Interrupts * Table 4. List of Mnemonics * Table 5-7. Instructions * Table 8. Opcode Matrix * Table 9. Detailed Instruction Operation * Figure 1. Block Diagram ---------------------------------------------------------------------------- Jouko Valta (jopi@stekt.oulu.fi). GTE G 65 SC 802 / G 65 SC 816 Microcircuits CMOS 8/16-Bit Microprocessor Family Features Advanced CMOS design for low power consumption and increased noise immunity Emulation mode for total software compatibility with 6502 designs Full 16-bit ALU, Accumulator, Stack Pointer, and Index Registers Direct Register for ''zero page'' addressing 24 addressing modes (including 13 original 6502 modes) Wait for Interrupt (WAI) and Stop the Clock (STP) instructions for reduced power consumption and decreased interrupt latency 91 instructions with 255 opcodes Co-Processor (COP) instruction and associated vector Powerful Block Move instructions Features (G65SC802 Only) 8-Bit Mode with both software and hardware (pin-to-pin) compatibility with 6502 designs (64 KByte memory space) Program selectable 16-bit operation Choice of external or on-board clock generation Features (G65SC816 Only) Full 16-bit operation with 24 address lines for 16 MByte memory Program selectable 8-Bit Mode for 6502 coding compatibility. Valid Program Address (VPA) and Valid Data Address (VDA) outputs for dual cache and DMA cycle steal implementation Vector Pull (VP) output indicates when interrupt vectors are being fetched. May be used for vectoring/prioritizing interrupts. Abort interrupt and associated vector for