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collapseos/arch/z80/sms/xcompsdc.fs

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sms: simplify and solidify ports-related drivers Add _TRA!, _THA!, _TRB!, _THB! routines to easily handle those pins' value without stepping on other pins like the drivers previously did. For SDC driver, it's going to be important soon because it turns out that I can't get away with "always on" CS, so I'll need a scheme where it's important that TH/TR pins have stable values.
2020-11-03 10:53:57 +11:00
( xcomp for a SMS with PS/2 keyboard on port A and SPI relay
on port B, with SD card attached )
( 8K of onboard RAM )
0xdd00 CONSTANT RS_ADDR
( Memory register at the end of RAM. Must not overwrite )
0xddca CONSTANT PS_ADDR
Integrate RDLN input buffer into sysvars In the beginning of Collapse OS' Forth version, the readline sub- system was optional. This is why we had this separate RDLN$ routine and that the input buffer was allocated at boot time. It's been a while since the RDLN system has been made mandatory, but we still paid the complexity tax of this separation. Not anymore.
2021-01-03 06:20:50 +11:00
RS_ADDR 0xb0 - CONSTANT SYSVARS
sms: simplify and solidify ports-related drivers Add _TRA!, _THA!, _TRB!, _THB! routines to easily handle those pins' value without stepping on other pins like the drivers previously did. For SDC driver, it's going to be important soon because it turns out that I can't get away with "always on" CS, so I'll need a scheme where it's important that TH/TR pins have stable values.
2020-11-03 10:53:57 +11:00
0xc000 CONSTANT HERESTART
sms: add support for VDP's text mode Because that mode behaves exactly like in a regular TMS9918, a new driver for TMS9918 has been added in blkfs and SMS' VDP now uses it. Also, fix broken 5x7 font.
2020-11-14 04:15:20 +11:00
0xbf CONSTANT TMS_CTLPORT
0xbe CONSTANT TMS_DATAPORT
Integrate RDLN input buffer into sysvars In the beginning of Collapse OS' Forth version, the readline sub- system was optional. This is why we had this separate RDLN$ routine and that the input buffer was allocated at boot time. It's been a while since the RDLN system has been made mandatory, but we still paid the complexity tax of this separation. Not anymore.
2021-01-03 06:20:50 +11:00
SYSVARS 0xa0 + CONSTANT GRID_MEM
SYSVARS 0xa3 + CONSTANT CPORT_MEM
sms: simplify and solidify ports-related drivers Add _TRA!, _THA!, _TRB!, _THB! routines to easily handle those pins' value without stepping on other pins like the drivers previously did. For SDC driver, it's going to be important soon because it turns out that I can't get away with "always on" CS, so I'll need a scheme where it's important that TH/TR pins have stable values.
2020-11-03 10:53:57 +11:00
0x3f CONSTANT CPORT_CTL
0xdc CONSTANT CPORT_D1
0xdd CONSTANT CPORT_D2
Integrate RDLN input buffer into sysvars In the beginning of Collapse OS' Forth version, the readline sub- system was optional. This is why we had this separate RDLN$ routine and that the input buffer was allocated at boot time. It's been a while since the RDLN system has been made mandatory, but we still paid the complexity tax of this separation. Not anymore.
2021-01-03 06:20:50 +11:00
SYSVARS 0xa4 + CONSTANT PS2_MEM
sms: simplify and solidify ports-related drivers Add _TRA!, _THA!, _TRB!, _THB! routines to easily handle those pins' value without stepping on other pins like the drivers previously did. For SDC driver, it's going to be important soon because it turns out that I can't get away with "always on" CS, so I'll need a scheme where it's important that TH/TR pins have stable values.
2020-11-03 10:53:57 +11:00
5 LOAD ( z80 assembler )
262 LOAD ( xcomp )
524 LOAD ( font compiler )
sms: generate TMR SEGA signature in Collapse OS itself Having the signature generation code in /tools prevents self-hosting on the SMS.
2020-11-26 13:42:07 +11:00
165 LOAD ( Sega ROM signer )
sms: simplify and solidify ports-related drivers Add _TRA!, _THA!, _TRB!, _THB! routines to easily handle those pins' value without stepping on other pins like the drivers previously did. For SDC driver, it's going to be important soon because it turns out that I can't get away with "always on" CS, so I'll need a scheme where it's important that TH/TR pins have stable values.
2020-11-03 10:53:57 +11:00
282 LOAD ( boot.z80.decl )
270 LOAD ( xcomp overrides )
Have FILL use indirect memory access This allows SMS xcomp to use ALLOT0 instead of ZFILL,
2020-12-08 11:17:51 +11:00
DI, 0x100 JP, 0x62 ALLOT0 ( 0x66 )
RETN, 0x98 ALLOT0 ( 0x100 )
sms: simplify and solidify ports-related drivers Add _TRA!, _THA!, _TRB!, _THB! routines to easily handle those pins' value without stepping on other pins like the drivers previously did. For SDC driver, it's going to be important soon because it turns out that I can't get away with "always on" CS, so I'll need a scheme where it's important that TH/TR pins have stable values.
2020-11-03 10:53:57 +11:00
( All set, carry on! )
CURRENT @ XCURRENT !
0x100 BIN( !
283 335 LOADR ( boot.z80 )
353 LOAD ( xcomp core low )
CREATE ~FNT CPFNT7x7
sms: add support for VDP's text mode Because that mode behaves exactly like in a regular TMS9918, a new driver for TMS9918 has been added in blkfs and SMS' VDP now uses it. Also, fix broken 5x7 font.
2020-11-14 04:15:20 +11:00
470 472 LOADR ( TMS9918 )
602 604 LOADR ( VDP )
Add Grid subsystem The goal is to offload the SMS VDP driver a little bit.
2020-11-10 09:15:41 +11:00
402 404 LOADR ( Grid )
sms: simplify and solidify ports-related drivers Add _TRA!, _THA!, _TRB!, _THB! routines to easily handle those pins' value without stepping on other pins like the drivers previously did. For SDC driver, it's going to be important soon because it turns out that I can't get away with "always on" CS, so I'll need a scheme where it's important that TH/TR pins have stable values.
2020-11-03 10:53:57 +11:00
625 626 LOADR ( SMS ports )
620 LOAD ( PAD ) : (ps2kc) (ps2kcA) ; 411 414 LOADR
622 LOAD ( SPI )
1 CONSTANT SDC_DEVID 423 436 LOADR ( SDC )
390 LOAD ( xcomp core high )
(entry) _
( Update LATEST )
PC ORG @ 8 + !
grid: add XYMODE In VE on the SMS, the first contents line would always be cleared because of NEWLN being called when the FBUF would spit its last char. Inconvenient... I've added a "graphical" mode to the grid subsystem to inhibit this behavior in a graphical situation such as in VE. Also, write a more complete Grid documentation.
2020-11-15 14:35:08 +11:00
," VDP$ GRID$ PS2$ BLK$ (im1) " EOT,
Add words |M and |L Splitting a word into MSB/LSB pairs happens often and is worth, I think, native words. Also, I'm going to need it in the upcoming commits.
2020-12-08 12:08:45 +11:00
ORG @ 0x100 - DUP |M 2 PC! 2 PC!
sms: generate TMR SEGA signature in Collapse OS itself Having the signature generation code in /tools prevents self-hosting on the SMS.
2020-11-26 13:42:07 +11:00
DUP 1 ( 16K ) segasig
Add words |M and |L Splitting a word into MSB/LSB pairs happens often and is worth, I think, native words. Also, I'm going to need it in the upcoming commits.
2020-12-08 12:08:45 +11:00
0x4000 + |M 2 PC! 2 PC!
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