lxdream.org :: lxdream/STATUS r176:8be4abcaa454

filename	STATUS
changeset	176:8be4abcaa454
next	354:8bf6587e1f9b
author	nkeynes
date	Tue Sep 26 11:09:13 2006 +0000 (17 years ago)
permissions	-rw-r--r--
last change	Add CHECKSLOTILLEGAL() checks around a few banned delay-slot instructions that were missing it Change CHECKPRIV() to raise slot-illegal on a delay-slot instruction rather than general-illegal (as per the manual) Convert UNDEF() to do the real exception rather than halting the machine Remove a couple of superfluous alignment checks

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     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/STATUS	Tue Sep 26 11:09:13 2006 +0000
     1.3 @@ -0,0 +1,80 @@
     1.4 +Current status
     1.5 +==============
     1.6 +
     1.7 +General issues
     1.8 +  - No dynamic recompilation yet
     1.9 +  - Slow (not performance optimized yet at all. See above).
    1.10 +  - No I/O timing whatsoever except at a timeslice level for audio/video.
    1.11 +    (ie DMA, rendering, GD-Rom operations need to take > 0 ms to complete)
    1.12 +
    1.13 +SH4 Core
    1.14 +  + Base instruction set  (Complete?)
    1.15 +  - No MMU support (address translation, TLB, etc)
    1.16 +  - No user-mode support
    1.17 +  - Not remotely cycle-correct timing
    1.18 +
    1.19 +SH4 On-chip peripherals 
    1.20 +  BSC
    1.21 +    * Not implemented except for PCTRA/PDTRA, and that part is quite dodgy.
    1.22 +  CPG
    1.23 +    * Complete?
    1.24 +  DMAC
    1.25 +    * Implemented to extent needed by ASIC DMA, not fully complete
    1.26 +  INTC
    1.27 +    * Complete?
    1.28 +  RTC
    1.29 +    * Not implemented
    1.30 +  SCI
    1.31 +    * Not implemented (not even hooked up in the hardware?)
    1.32 +  SCIF
    1.33 +    * Complete? (not heavily tested)
    1.34 +  TMU
    1.35 +    * Complete?
    1.36 +  UBC
    1.37 +    * Not implemented
    1.38 +
    1.39 +AICA SPU
    1.40 +  ARM core
    1.41 +    + Base instruction set (Complete?)
    1.42 +    - No thumb support
    1.43 +    - No system coprocessor support
    1.44 +    - No cycle-correct timing
    1.45 +  DSP
    1.46 +    + Basic sound generation
    1.47 +    - No waveform support
    1.48 +    - No LFO support
    1.49 +
    1.50 +PVR2 GPU
    1.51 +  TA
    1.52 +    + Quick-n-dirty hack job to store the TA command lists in the poly
    1.53 +      buffer and nothing else. Not remotely correct. 
    1.54 +    - Doesn't support 16-dword vertexes
    1.55 +  Render
    1.56 +    + Basic opaque and translucent polygon support
    1.57 +    + Depth buffer, alpha blend, most poly modes
    1.58 +    - No translucent poly sorting
    1.59 +    - No modifier volumes
    1.60 +    - No sprites
    1.61 +    - No specular highlight
    1.62 +    - No 16-dword vertexes
    1.63 +  Texture
    1.64 +    + Most texture formats supported
    1.65 +    - No support for VQ decompression
    1.66 +
    1.67 +GD-Rom
    1.68 +  IDE interface
    1.69 +    + Supports Ident, Set feature, and Packet (and no other IDE commands)
    1.70 +    + Supports PIO and DMA modes
    1.71 +  GD-Rom interface
    1.72 +    + Supports Test ready, Ident, Read TOC, Read Session info, Sense request, and Read CD
    1.73 +      commands
    1.74 +    - other 20-odd commands not supported
    1.75 +
    1.76 +Maple
    1.77 +  + Maple bus complete?
    1.78 +  + Standard DC controllers
    1.79 +  - No support for VMU
    1.80 +  - No support for other controller types (keyboard, mouse, gun, etc)
    1.81 +
    1.82 +Network
    1.83 +  - Not implemented