Model Information

This page provides detailed information about the SystemC TLM2 Fast Processor Model of the Renesas RL78-S2 core.
Processor IP owner is Renesas (formerly NEC).

OVP Fast Processor Model is written in C.
Provides a C API for use in C based platforms.
Provides a native C++ interface for use in SystemC TLM2 platforms.

The model is written using the OVP VMI API that provides a Virtual Machine Interface that defines the behavior of the processor.
The VMI API makes a clear line between model and simulator allowing very good optimization and world class high speed performance.

The model is provided as a binary shared object and is also available as source (different models have different licensing conditions). This allows the download and use of the model binary or the use of the source to explore and modify the model.

The model has been run through an extensive QA and regression testing process.

Embedded Software Development tools
This model executes instructions of the target architecture and provides an interface for debug access. An interface to GDB is provided and this allows the connection of many industry standard debuggers that use the GDB/RSP interface. For more information watch the OVP video here.
The model also works with the Imperas Multicore Debugger and advanced Verification, Analysis and Profiling tools.

Overview of Renesas RL78-S2 Fast Processor Model
Model Variant name: RL78-S2
Description:
    RL78 Family Processor Model.
Licensing:
    Open Source Apache 2.0
Reference:
    RL78 User Manual: Software, Single-Chip microcontrollers, http://documentation.renesas.com/doc/products/mpumcu/doc/rl78/r01us0015ej0220_rl78.pdf
Limitations:
    All instructions are supported except the MULU, MULHU, MULH, DIVHU, MACHU, MACH and SEL instructions that are not implemented.
    The PMC (Processor Model Control) register behavior is not modeled.
    This processor model requires that RAM is available at the address range of the memory mapped registers
    Address ranges 0xFFEE0 to 0xFFEFF for General purpose registers (e.g. X, A)
    Address ranges 0xFFFF0 to 0xFFFFF for special function registers (e.g. SP)
    This processor model should be started with a reset signal. The processor reads from the reset vector 0x0000 on reset and uses this value for the initial PC
Verification:
    Models have been tested by eSOL TRINITY and Imperas
Features:
    Banked registers are supported
    External exceptions are supported
    The BRK instruction (internal trap) is supported
    Memory mirroring is supported
    Memory mapped registers is supported

Model downloadable (needs registration and to be logged in) in package rl78.model for Windows32 and for Linux32. Note that the Model is also available for 64 bit hosts as part of the commercial products from Imperas.
OVP simulator downloadable (needs registration and to be logged in) in package OVPsim for Windows32 and for Linux32. Note that the simulator is also available for 64 bit hosts as part of the commercial products from Imperas.
OVP Download page here.
OVP documentation that provides overview information on processor models is available OVP_Guide_To_Using_Processor_Models.pdf.

Full model specific documentation on the variant RL78-S2 is available OVP_Model_Specific_Information_rl78_RL78-S2.pdf.

Configuration
Location: The Fast Processor Model source and object file is found in the installation VLNV tree: renesas.ovpworld.org/processor/rl78/1.0
Processor Endian-ness: This model is little endian.
Processor ELF Code: The ELF code for this model is: 0xc5
QuantumLeap Support: The processor model has not yet been qualified to run in a QuantumLeap enabled simulator.

TLM Initiator Ports (Bus Ports)
Port TypeNameWidth (bits)Description
masterINSTRUCTION20
masterDATA20
slaveGPRSP0
slaveSFRSP0
SystemC Signal Ports (Net Ports)
Port TypeNameDescription
resetinput
extintinput
intAckoutput

No FIFO Ports in RL78-S2.

Exceptions
NameCodeDescription
RST0
TRP0
IAW0
BRK126
IRQ65535
Execution Modes
ModeCodeDescription
RB00
RB11
RB22
RB33
More Detailed Information

The RL78-S2 SystemC TLM2 Fast Processor Model also has parameters, model commands, and many registers.
The model may also have hierarchy or be multicore and have other attributes and capabilities.
To see this information, please have a look at the model variant specific documents.
Click here to see the detailed document OVP_Model_Specific_Information_rl78_RL78-S2.pdf.

Other Sites/Pages with similar information

Information on the RL78-S2 OVP Fast Processor Model can also be found on other web sites::
www.ovpworld.org has the library pages http://www.ovpworld.org/library/wikka.php?wakka=CategoryProcessor
www.imperas.com has more information on the model library

A couple of documents (from other related sites that might be of interest)
http://www.ovpworld.org: Writing C Platforms and Modules using the OVP OP API
http://www.ovpworld.org: Creating Instruction Accurate Processor models using the VMI API

Two Videos on these models (from other sites)
http://www.ovpworld.org: riscvOVPsim. A complete RISC-V ISS for bare-metal software development and Specification Compliance Test Development
http://www.ovpworld.org: Renesas v850 Bare Metal Video Presentation

Currently available Fast Processor Model Families.

FamilyModel Variant
RISC-V Models    RISC-V Models aliases RV32I RV32IM RV32IMC RV32IMAC RV32G RV32GC RV32GCN RV32E RV32EC RV64I RV64IM RV64IMC RV64IMAC RV64G RV64GC RV64GCN (aliases)
MIPS Models    MIPS Models aliases ISA M14K M14KcTLB M14KcFMM 4KEc 4KEm 4KEp M4K 4Kc 4Km 4Kp 24Kc 24Kf 24KEc 24KEf 34Kc 34Kf 34Kn 74Kc 74Kf 1004Kc 1004Kf 1074Kc 1074Kf microAptivC microAptivP microAptivCF interAptiv interAptivUP proAptiv 5Kf 5Kc 5KEf 5KEc M5100 M5150 M6200 M6250 MIPS32R6 P5600 P6600 I6400 MIPS64R6 I6500 (aliases)
ARM Models    ARM Models aliases ARMv4T ARMv4xM ARMv4 ARMv4TxM ARMv5xM ARMv5 ARMv5TxM ARMv5T ARMv5TExP ARMv5TE ARMv5TEJ ARMv6 ARMv6K ARMv6T2 ARMv6KZ ARMv7 ARM7TDMI ARM7EJ-S ARM720T ARM920T ARM922T ARM926EJ-S ARM940T ARM946E ARM966E ARM968E-S ARM1020E ARM1022E ARM1026EJ-S ARM1136J-S ARM1156T2-S ARM1176JZ-S Cortex-R4 Cortex-R4F Cortex-A5UP Cortex-A5MPx1 Cortex-A5MPx2 Cortex-A5MPx3 Cortex-A5MPx4 Cortex-A8 Cortex-A9UP Cortex-A9MPx1 Cortex-A9MPx2 Cortex-A9MPx3 Cortex-A9MPx4 Cortex-A7UP Cortex-A7MPx1 Cortex-A7MPx2 Cortex-A7MPx3 Cortex-A7MPx4 Cortex-A15UP Cortex-A15MPx1 Cortex-A15MPx2 Cortex-A15MPx3 Cortex-A15MPx4 Cortex-A17MPx1 Cortex-A17MPx2 Cortex-A17MPx3 Cortex-A17MPx4 AArch32 AArch64 Cortex-A32MPx1 Cortex-A32MPx2 Cortex-A32MPx3 Cortex-A32MPx4 Cortex-A35MPx1 Cortex-A35MPx2 Cortex-A35MPx3 Cortex-A35MPx4 Cortex-A53MPx1 Cortex-A53MPx2 Cortex-A53MPx3 Cortex-A53MPx4 Cortex-A55MPx1 Cortex-A55MPx2 Cortex-A55MPx3 Cortex-A55MPx4 Cortex-A57MPx1 Cortex-A57MPx2 Cortex-A57MPx3 Cortex-A57MPx4 Cortex-A72MPx1 Cortex-A72MPx2 Cortex-A72MPx3 Cortex-A72MPx4 Cortex-A73MPx1 Cortex-A73MPx2 Cortex-A73MPx3 Cortex-A73MPx4 Cortex-A75MPx1 Cortex-A75MPx2 Cortex-A75MPx3 Cortex-A75MPx4 MultiCluster ARMv6-M ARMv7-M Cortex-M0 Cortex-M0plus Cortex-M1 Cortex-M3 Cortex-M4 Cortex-M4F (aliases)
POWER Models    POWER Models aliases mpc82x UISA m476 m470 m460 m440 (aliases)
Renesas Models    Renesas Models aliases V850 V850E1 V850E1F V850ES V850E2 V850E2M V850E2R RH850G3M m16c r8c RL78-S1 RL78-S2 RL78-S3 (aliases)
Other Models    Other Models aliases Synopsys ARC_600 Synopsys ARC_605 Synopsys ARC_700 Synopsys ARC_0x21 Synopsys ARC_0x22 Synopsys ARC_0x31 Synopsys ARC_0x32 openCores_generic Andes_N25 Andes_NX25 Microsemi_CoreRISCV Microsemi_MiV_RV32IMA SiFive_E31 SiFive_E51 SiFive_U54 Xilinx MicroBlaze_V7_00 Xilinx MicroBlaze_V7_10 Xilinx MicroBlaze_V7_20 Xilinx MicroBlaze_V7_30 Xilinx MicroBlaze_V8_00 Xilinx MicroBlaze_V8_10 Xilinx MicroBlaze_V8_20 Xilinx MicroBlaze_V9_50 Xilinx MicroBlaze_V10_00 Xilinx MicroBlaze_ISA Altera Nios II_Nios_II_F Altera Nios II_Nios_II_S Altera Nios II_Nios_II_E (aliases)