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Rev Log message Author Age Path
21 New repository setup for the brand new Atlas 2k Processor! zero_gravity 3753d 02h /
20 re-init of project repository zero_gravity 3753d 02h /
19 bug fixes in:
- MMU.vhd
- BUS_INTERFACE.vhd

initial setup of "atlas-x2" project folder
zero_gravity 4005d 07h /
18 huge update:
- doc update
- several bug-fixes in MMU, CTRL and BUS_INTERFACE.vhd
have fun ;)
zero_gravity 4028d 03h /
17 - new interrupt vector: unique vector for undefined instructions / access violations ("command error trap")
- bug fix in assembler: correct absolute address generator - assembler works fine now ;)
zero_gravity 4038d 07h /
16 - assembler update: assembler can now include other files using the ".include" statement
- doc update: fixed error in instruction summary table
zero_gravity 4050d 09h /
15 - new instruction added: NEG Rd, Rx (Rd <- 0 - Ra)
- instruction is built from redundant SUB with identical operands (SUB Rd, Ra, Ra; will always result in 0)
- since there are other instructions to clear a register, the redundant SUB has been recoded to perform the NEG operation
- NEG operation added to documentary and assembler
zero_gravity 4057d 11h /
14 - instruction set summary card added to documentary (Atlas Processor Datasheet)
- minor edits in SYS_REG.vhd and ATLAS_pkg.vhd files
zero_gravity 4058d 06h /
13 - new option added to the RT/GT/STPC instructions
- ATLAS_MICRO implementation scheme added (+testbench)
- huge DOC update
zero_gravity 4073d 02h /
12 - assembler: dev c++ project changed to 32-bit
- atlas_asm.exe is now compiled for 32-bit system
zero_gravity 4095d 08h /
11 - optimized memory components
-> less access hardware
-> easier mapping for quartus sythesis tool
zero_gravity 4098d 02h /
10 - optimized opcode decoder
- deleted HALT signal from Atlas Micro - not feasible here
- doc update
zero_gravity 4098d 03h /
9 - ATLAS_MICRO implementation example added to project (CPU + I/D memory) zero_gravity 4099d 04h /
8 - bug-fix: MSR read access
- new instruction added: SPR (store parity of register to T-flag)
- doc update
- assembler update
zero_gravity 4099d 05h /
7 - data path diagram added to documentary (finally!!)
- updated assembler version
- updated assembler examples
zero_gravity 4102d 07h /
6 - more code examples added to documentary
- minor updates for RTL files
- assembler now supports binary and hexadecimal number representation
zero_gravity 4105d 05h /
5 - error corrected in data sheet's branch table asm example zero_gravity 4110d 09h /
4 - complete update zero_gravity 4110d 10h /
3 - bug-fix of compare/test instruction in assembler program
- minor edits in rtl files to make a more efficient use of config constants
zero_gravity 4112d 02h /
2 initial repository setup zero_gravity 4113d 04h /

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