| Line 12... |
Line 12... |
Leading zeros are optional. Example: `CSR(mimpid) = 0x01040312 => 01.04.03.12 = Version 01.04.03.12 = v1.4.3.12`. The version number is globally
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Leading zeros are optional. Example: `CSR(mimpid) = 0x01040312 => 01.04.03.12 = Version 01.04.03.12 = v1.4.3.12`. The version number is globally
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defined by the `hw_version_c` constant in the main VHDL package file [`rtl/core/neorv32_package.vhd`](https://github.com/stnolting/neorv32/blob/master/rtl/core/neorv32_package.vhd).
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defined by the `hw_version_c` constant in the main VHDL package file [`rtl/core/neorv32_package.vhd`](https://github.com/stnolting/neorv32/blob/master/rtl/core/neorv32_package.vhd).
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| Date (*dd.mm.yyyy*) | Version | Comment |
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| Date (*dd.mm.yyyy*) | Version | Comment |
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|:----------:|:-------:|:--------|
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|:----------:|:-------:|:--------|
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| 07.03.2021 | 1.5.2.4 | :sparkles: added new IO/peripheral module: **Smart LED Interface (NEOLED)** to interface intelligent LEDs (WS2812/WS2811/NeoPixel(c) compatible; supports RGB and RGBW LEDs in *parallel*) with internal TX buffer; new top generics: `IO_NEOLED_EN`: implement NEOLED interface when *true*; new top signals: `neoled_o`: single-wire async. serial data interface; FIFO re-fill interrupt via *fast interrupt request channel 9* `FIRQ9`; added new "NEOLED" section to data sheet; added SW driver library and simple NEOLED example program (`sw/example/demo_neopixel`) |
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| 06.03.2021 | 1.5.2.3 | clean-up of CPU control code: fixed minor bug in F-exension's instruction decoding; changed coding style for CSR write access (old version might have caused "inferring latch..." warning in Intel Quartus); fixed default values for CSRs when according extensions are disabled |
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| 04.03.2021 | 1.5.2.2 | added two new generics to configure CFS IO conduit sizes (implementing [issue #13](https://github.com/stnolting/neorv32/issues/13)): `IO_CFS_IN_SIZE` - type: `positive`, configures the size of `cfs_in_i` signal; `IO_CFS_OUT_SIZE` - type: `positive`, configures the size of `cfs_out_o` signal; minor edits to floating-point CPU infrastructure |
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| 03.03.2021 | 1.5.2.1 | added CPU core infrastructure for *upcoming* single-precision floating-point extension `F`; :warning: **floating-point extension is NOT OPERATIONAL YET!** added new rtl file for the floating-point unit `rtl/core/neorv32_cpu_cp_fpu.vhd` (blank template!) |
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| 01.03.2021 | [**:rocket:1.5.2.0**](https://github.com/stnolting/neorv32/releases/tag/v1.5.2.0) | **New release** |
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| 01.03.2021 | [**:rocket:1.5.2.0**](https://github.com/stnolting/neorv32/releases/tag/v1.5.2.0) | **New release** |
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| 27.02.2021 | 1.5.1.11 | :bug: fixed several small bugs in *bitmanipulation extension* instruction decoding (not all `B` instructions triggered and *illegal instruction exception* when B-extension = disabled) |
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| 27.02.2021 | 1.5.1.11 | :bug: fixed several small bugs in *bitmanipulation extension* instruction decoding (not all `B` instructions triggered and *illegal instruction exception* when B-extension = disabled) |
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| 25.02.2021 | 1.5.1.10 | :bug: fixed bugs in UART RTS/CTS hardware control flow - the new setup was verified on real hardware; added double-buffering to UART RX engine |
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| 25.02.2021 | 1.5.1.10 | :bug: fixed bugs in UART RTS/CTS hardware control flow - the new setup was verified on real hardware; added double-buffering to UART RX engine |
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| 24.02.2021 | 1.5.1.9 | `mcounteren` CSR is hardwired to zero if user mode is not implemented (`CPU_EXTENSION_RISCV_U` = false); added `Zbs` (single-bit operations) sub-extension to bitmanipulation unit |
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| 24.02.2021 | 1.5.1.9 | `mcounteren` CSR is hardwired to zero if user mode is not implemented (`CPU_EXTENSION_RISCV_U` = false); added `Zbs` (single-bit operations) sub-extension to bitmanipulation unit |
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| 22.02.2021 | 1.5.1.8 | added programmable *RTS/CTS hardware flow control* to UARTs; new top signals: `uart0_rts_o`, `uart0_cts_i`, `uart1_rts_o`, `uart1_cts_i`; UART.TX engine will only start sending (if `CTS` flow control is activated) if `uart*_cts_i` is asserted (low-active); UART.RX engine signals (if `RTS` flow control is activated) via `uart*_rts_o` if it is ready to receive new data (low-active); added hw flow control parameter to uart setup functions `neorv32_uart*_setup()` |
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| 22.02.2021 | 1.5.1.8 | added programmable *RTS/CTS hardware flow control* to UARTs; new top signals: `uart0_rts_o`, `uart0_cts_i`, `uart1_rts_o`, `uart1_cts_i`; UART.TX engine will only start sending (if `CTS` flow control is activated) if `uart*_cts_i` is asserted (low-active); UART.RX engine signals (if `RTS` flow control is activated) via `uart*_rts_o` if it is ready to receive new data (low-active); added hw flow control parameter to uart setup functions `neorv32_uart*_setup()` |
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