OVP Peripheral Model: Mips16450C
Model Specific Information
This page provides introductory usage information for an Imperas OVP peripheral behavioral model.
The page is split into sections providing specific information for this peripheral,
including any ports for connecting into a platform, registers, other component parts, and configuration options and general information for peripheral modeling with Imperas OVP.
Licensing
Open Source Apache 2.0
Description
Model of 16550/16450 UART.
Special version with register addresses for MIPS MALTA C-BUS.
Connects to a bus by a slave port and optionally to a processor by an interrupt signal.
The serial input/output ports are modelled by socket connection which must be attached to a process outside the simulation environment.
Note that on start:up, the UART model will block the simulator, pending a connection to the socket.
Limitations
No modelling of baud:rate.
No modem support (DTR etc).
No support for parity.
No means to simulate errors.
Reference
MIPS Malta Datasheet
Location
The 16450C peripheral model is located in an Imperas/OVP installation at the VLNV: mips.ovpworld.org / peripheral / 16450C / 1.0.
Peripheral Instance Parameters
This model accepts the following parameters:
Table : Peripheral Parameters
Name | Type | Description |
---|
uart16550 | bool | Enable 16550 mode (with FIFOS) |
simulatebaud | bool | If true, transmit at the programmed baud rate (the default is to transmit without any delay). |
defaultbaud | uns32 | Set the default baud rate multiplier. Default is 9. |
charmode | bool | Puts the telnet server into char mode Default is line mode |
console | bool | If specified, port number is ignored, and a console pops up automatically |
client | bool | If true, model is a client and will connect to portnum. If false, model is a server and will listen on portnum. |
portnum | uns32 | If set, listen on, or connect to, this port. If set to zero in listen mode, allocate a port from the pool and listen on that. |
hostname | string | Name (or IP address) of host to connect to. Valid if listen=true |
infile | string | Name of file to use for device source |
outfile | string | Name of file to write device output |
portFile | string | If portnum was specified as zero, write the port number to this file when it's known |
log | bool | If specified, serial output will go to simulator log |
finishOnDisconnect | bool | If set, disconnecting the port will cause the simulation to finish |
connectnonblocking | bool | If set, simulation can begin before the connection is made |
xchars | uns32 | Width of console in characters |
ychars | uns32 | Height of console in characters |
record | string | Record external events into this file |
replay | string | Replay external events from this file |
Net Ports
This model has the following net ports:
Table 1: Net Ports
Name | Type | Must Be Connected | Description |
---|
intOut | output | F (False) | Interrupt output. |
Bus Slave Ports
This model has the following bus slave ports:
Bus Slave Port: bport1
Table 2: Bus Slave Port: bport1
Name | Size (bytes) | Must Be Connected | Description |
---|
bport1 | 0x40 | T (True) | Byte:wide access to control and status registers. |
Table 3: Bus Slave Port: bport1 Registers:
Name | Offset | Width (bits) | Description | R/W | is Volatile |
---|
rbr | 0x0 | 8 | receive byte | | |
tbr | 0x0 | 8 | transmit byte | | |
ier | 0x8 | 8 | interrupt enable | | |
iir | 0x10 | 8 | interrupt input | | |
lcr | 0x18 | 8 | line control | | |
mcr | 0x20 | 8 | modem control | | |
lsr | 0x28 | 8 | line status | | |
msr | 0x30 | 8 | modem status | | |
scr | 0x38 | 8 | status/control | | |
Platforms that use this peripheral component
Peripheral components can be used in many different platforms, including those developed by Imperas or by other users of OVP. You can use this peripheral in your own platforms.
Table 4: Publicly available platforms using peripheral '16450C'