Differences

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--- apollo_core:start [2020/02/12 06:04]
muaddib [Supported instructions]
+++ apollo_core:start [2020/09/27 09:50] (current)
muaddib
@@ Line 1: / Line 1: @@
 ====== 68080 Core ======
-{{:apollo-01.png?nolink&128|}}
+{{:crom_apollo-02.png?nolink&128|}}
 ===== Overview =====
@@ Line 7: / Line 7: @@
 **68080** is a new CPU that is code-compatible with the **Motorola 68k** processors.
-It is an affordable CPU for your classic Amigas (or Amiga compatibles) that is **much faster than the fastest 68060**. It is compatible with all CPUs and [[apollo_core:fpu|FPUs]] of the Motorola 68000 family. [(Few rare instructions are currently not supported.)]  It is designed according to modern CPU standards, is fully written in **VHDL**, and is intended to run on [[https://www.intel.com/content/www/us/en/products/programmable/cyclone-series.html|Altera Cyclone FPGAs]].
+It is an affordable CPU for your classic Amigas (or Amiga compatibles) that is **much faster than the fastest 68060**. It is compatible with all CPUs and [[apollo_core:fpu|FPUs]] of the Motorola 68000 family. [(MMU-related instructions are currently not supported.)]  It is designed according to modern CPU standards, is fully written in **VHDL**, and is intended to run on [[https://www.intel.com/content/www/us/en/products/programmable/cyclone-series.html|Altera Cyclone FPGAs]].
 **AmigaOS 3.x** currently recognizes this new CPU as a **68040**.
@@ Line 51: / Line 51: @@
 | Amiga 1200   | MK2          | 68060   |  66 MHz |   65 | ++++++++++++++++ |
 | Amiga 600    | Vampire 600 V2   | SILVER6 |     x15 |  173 | +++++++++++++++++++++++++++++++++++++++++++ |
+More detailed comparisons to an overclocked 68060 can be found [[http://www.apollo-core.com/knowledge.php?note=30521|here]].
 ----
 ===== Features =====
@@ Line 60: / Line 63: @@
 ^ Feature ^ 68000 ^ 68020 ^ 68030 ^ 68040 ^ 68060 ^ 68080 ^
-| 68K ISA                          |  X     |  X     |  X     |  X    |  X    |  X     |
+| 68k ISA                          |  X     |  X     |  X     |  X    |  X    |  X     |
 | Extended EA-modes                |        |  X     |  X     |  X    |  X    |  X     |
 | BitFields                        |        |  X     |  X     |  X    |  X    |  X     |
@@ Line 96: / Line 99: @@
   * [[.code_samples:|68080 asm code samples]]
-^ Unsupported instructions ^ Notes ^
+lets you use EA as 1 source and to update 3rd registers - so normally not overwrite source registers.
-| ''TAS2'' | Never used on AmigaOS |
-| ''MMU''-related | Not implemented |
-----
-===== New 64-bit instructions =====
-{{:64bit.png?nolink&48|}}
-The instructions are very similar to the ''SSE'' / ''ALTIVEC'' version of them. APOLLO lets you use EA as 1 source and to update 3rd registers - so normally not overwrite source registers.
+''MMU''-related instructions are not supported.  These are rarely used on AmigaOS.
-  * **(ea)** can be any Effective Address.
+==== AMMX: New 64-bit instructions ====
-  * **B** is one of 16 Source Regs.
-  * **C** is one of 16 Source Regs.
-  * **D** is one of 16 Destination Regs.
-^ Instruction ^ Operands ^ Description ^
+These instructions are very similar to the ''SSE'' / ''AltiVec'' versions of them.
-| [[apollo_core:instructions:perm|PERM]]     | (ea),B,C,D | Permute Bytes. |
-| [[apollo_core:instructions:bsel|BSEL]]     | (ea),B,D   | Select Bytes. |
-| [[apollo_core:instructions:por|POR]]       | (ea),B,D   | Parallel OR. |
-| [[apollo_core:instructions:pand|PAND]]     | (ea),B,D   | Parallel AND. |
-| [[apollo_core:instructions:pand|PANDN]]    | (ea),B,D   | Parallel ANDN. |
-| [[apollo_core:instructions:padd|PADD.B]]   | (ea),B,D   | Parallel ADD.B. |
-| [[apollo_core:instructions:padd|PADD.W]]   | (ea),B,D   | Parallel ADD.W. |
-| [[apollo_core:instructions:padd|PADDss.B]] | (ea),B,D   | Parallel ADDss.B - Signed with Saturate. |
-| [[apollo_core:instructions:padd|PADDss.W]] | (ea),B,D   | Parallel ADDss.W - Signed with Saturate. |
-| [[apollo_core:instructions:padd|PADDus.B]] | (ea),B,D   | Parallel ADDus.B - Unsigned with Saturate. |
-| [[apollo_core:instructions:padd|PADDus.W]] | (ea),B,D   | Parallel ADDus.W - Unsigned with Saturate. |
-| [[apollo_core:instructions:psub|PSUB.B]]   | (ea),B,D   | Parallel SUB.B. |
-| [[apollo_core:instructions:psub|PSUB.W]]   | (ea),B,D   | Parallel SUB.W. |
-| [[apollo_core:instructions:psub|PSUBss.B]] | (ea),B,D   | Parallel SUBss.B - Signed with Saturate. |
-| [[apollo_core:instructions:psub|PSUBss.W]] | (ea),B,D   | Parallel SUBss.W - Signed with Saturate. |
-| [[apollo_core:instructions:psub|PSUBus.B]] | (ea),B,D   | Parallel SUBus.B - Unsigned with Saturate. |
-| [[apollo_core:instructions:psub|PSUBus.W]] | (ea),B,D   | Parallel SUBus.W - Unsigned with Saturate. |
-| [[apollo_core:instructions:pavg|PAVG.B]]   | (ea),B,D   | Parallel AVG.B. |
-| [[apollo_core:instructions:pavg|PAVG.W]]   | (ea),B,D   | Parallel AVG.W. |
-| [[apollo_core:instructions:pcmp|PCMPeq.B]] | (ea),B,D   | Parallel CMPeq.B - Equal. |
-| [[apollo_core:instructions:pcmp|PCMPeq.W]] | (ea),B,D   | Parallel CMPeq.W - Equal. |
-| [[apollo_core:instructions:pcmp|PCMPgt.B]] | (ea),B,D   | Parallel CMPgt.B - Greater Than. |
-| [[apollo_core:instructions:pcmp|PCMPgt.W]] | (ea),B,D   | Parallel CMPgt.W - Greater Than. |
-| [[apollo_core:instructions:pmul|PMULSH.W]] | (ea),B,D   | Parallel MULSH.W. |
-| [[apollo_core:instructions:pmul|PMULSL.W]] | (ea),B,D   | Parallel MULSL.W. |
   * Quick Reference: [[http://www.apollo-core.com/AMMXQuickRef.pdf|PDF]]

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