[Oberon] System V5 - SYSTEM.Mod creation

[Jörg Straube]

Tonas

Module SYSTEM uses the same syntax as "normal" modules, but the implementation is provided directly by the compiler.

Eg when you write SYSTEM.GET it's more like an embedded assembler statement as the compiler will generate a Load instruction to get a word or a byte from memory.

Formal descrption here
https://www.inf.ethz.ch/personal/wirth/Oberon/Oberon07.Report.pdf
chapter 11.1

Jörg

> Am 10.04.2016 um 10:48 schrieb <thomas.kral at email.cz> <thomas.kral at email.cz>:
> 
> Hi,
> 
> While I am still studying PO.Applications, chapters on compiler, I already noticed that modules often import low level routines from SYSTEM.
> 
> I can see from the sources how routines are referenced, but actually where are they defined and built into the Oberon system?
> 
> SYSTEM.BIT
> SYSTEM.GET
> SYSTEM.PUT
> SPI
> SYSTEM.LDREG
> SYSTEM.REG
> SYSTEM.ADR
> SYSTEM.VAL
> 
> The above list may not be complete.
> It also proves I am not a careful reader, but I saw  some pseudo SYSTEM module being initialised in ORB.Mod.
> 
> Many thanks Tomas
> --
> Oberon at lists.inf.ethz.ch mailing list for ETH Oberon and related systems
> https://lists.inf.ethz.ch/mailman/listinfo/oberon
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 2380 bytes
Desc: not available
URL: <http://lists.inf.ethz.ch/pipermail/oberon/attachments/20160410/292cb099/attachment.p7s>