Miroirs/hp-saturn
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288 commits 1 branch 0 tags 2 MiB
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15 commits

Author SHA1 Message Date
Raphael Jacquot
194415a6ed cleanups 2019-03-15 13:31:37 +01:00
Raphael Jacquot
12f542441d pipeline rstk_ptr calculations for push 2019-03-15 11:35:33 +01:00
Raphael Jacquot
7b64f3e297 implement GOSUB (7xxx) 2019-03-15 10:21:02 +01:00
Raphael Jacquot
b3bc8cf327 add a comment about potential slowness 2019-03-15 07:13:38 +01:00
Raphael Jacquot
a1b22269b2 add mmio 
fix rtn instructions
decode block 14x
 2019-03-14 22:20:03 +01:00
Raphael Jacquot
a533e4ea37 cleanup the startup procedure 2019-03-14 17:52:03 +01:00
Raphael Jacquot
c62d562008 make it so that execution of bus programs happen 
in the same cycle as the instruction
modify the way jump and rtn are handled
add some registers to the debugger
 2019-03-14 16:37:51 +01:00
Raphaël Jacquot
f86a1d03c5 implement base alu functionnality 2019-03-06 12:16:34 +01:00
Raphaël Jacquot
28483afe9a implement CONFIG and RTN* (0[0-3]) 2019-03-05 05:39:34 +01:00
Raphaël Jacquot
479382e004 export rstk_ptr to debugger 
implement LCHEX (and almost done for LAHEX)
 2019-03-04 13:28:08 +01:00
Raphaël Jacquot
e47f12f1d7 implement push PC to RSTK 2019-03-04 11:52:05 +01:00
Raphaël Jacquot
da3cce2c07 execute the first jump successfully, and start reading the next instruction 2019-03-03 22:38:56 +01:00
Raphaël Jacquot
631b7f9153 start implementing jump instructions 2019-03-03 20:48:56 +01:00
Raphaël Jacquot
6dd38500a8 add a counter to slow things down 2019-03-03 15:19:07 +01:00
Raphaël Jacquot
eeb5150159 add the beginnings of a PC and RSTK handler 
fix bad maths in the rom-gx-r module
wire in the PC in the debugger and the control unit
add an execute flag, to start execution of partially
decoded instructions that need reading data from the
instruction stream
 2019-03-03 09:33:42 +01:00