mirror of
https://github.com/AndersBNielsen/6507SBC.git
synced 2024-09-21 02:27:33 +00:00
First commit
The Single Breadboard Computer
This commit is contained in:
AndersBNielsen
commit
8d5fd74340
9
.gitignore
vendored
Executable file
9
.gitignore
vendored
Executable file
@ -0,0 +1,9 @@
|
||||
*.o
|
||||
*.bin
|
||||
build/listing.txt
|
||||
.DS_Store
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||||
hardware/_autosave*
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||||
hardware/#auto_saved_files#
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||||
_autosave*
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||||
*-bak
|
||||
*-backups
|
||||
69
abn6507rom.s
Normal file
69
abn6507rom.s
Normal file
@ -0,0 +1,69 @@
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||||
.feature string_escapes ; Allow c-style string escapes when using ca65
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||||
.feature org_per_seg
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.feature c_comments
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||||
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||||
RIOT = $80
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||||
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||||
DRA = RIOT + $00 ;DRA ('A' side data register)
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||||
DDRA = RIOT + $01 ;DDRA ('A' side data direction register)
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DRB = RIOT + $02 ;DRB ('B' side data register)
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||||
DDRB = RIOT + $03 ;('B' side data direction register)
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||||
READTDI = RIOT + $04 ;Read timer (disable interrupt)
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||||
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||||
WEDGC = RIOT + $04 ;Write edge-detect control (negative edge-detect,disable interrupt)
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||||
RRIFR = RIOT + $05 ;Read interrupt flag register (bit 7 = timer, bit 6 PA7 edge-detect) Clear PA7 flag
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||||
A7PEDI = RIOT + $05 ;Write edge-detect control (positive edge-detect,disable interrupt)
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||||
A7NEEI = RIOT + $06 ;Write edge-detect control (negative edge-detect, enable interrupt)
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||||
A7PEEI = RIOT + $07 ;Write edge-detect control (positive edge-detect enable interrupt)
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||||
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READTEI = RIOT + $0C ;Read timer (enable interrupt)
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WTD1DI = RIOT + $14 ; Write timer (divide by 1, disable interrupt)
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WTD8DI = RIOT + $15 ;Write timer (divide by 8, disable interrupt)
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WTD64DI = RIOT + $16 ;Write timer (divide by 64, disable interrupt)
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WTD1KDI = RIOT + $17 ;Write timer (divide by 1024, disable interrupt)
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WTD1EI = RIOT + $1C ;Write timer (divide by 1, enable interrupt)
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WTD8EI = RIOT + $1D ;Write timer (divide by 8, enable interrupt)
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WTD64EI = RIOT + $1E ;Write timer (divide by 64, enable interrupt)
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WTD1KEI = RIOT + $1F ;Write timer (divide by 1024, enable interrupt)
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.segment "RODATA"
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.org $F000 ; Not strictly needed with CA65 but shows correct address in listing.txt
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nmi:
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irq:
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reset:
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cld ; Because you never know
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sei ; Probably not needed with the 6507
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;Set stack pointer and clear RAM
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ldx #$7f
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txs
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lda #0
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clearzp:
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sta $00,x
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dex
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bne clearzp
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sta $00,x
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lda #$FF
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sta DDRB ; Set whole B register to output
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; Reset state of DDRA is $00.
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main:
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inc DRB
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lda #244
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bit DRA
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bpl quartersecond
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sta WTD64DI ; 244*64 = 15616 ~= 16ms
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bne wait ; BRA
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quartersecond:
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sta WTD1KDI ; 244 * 1024 = 249856 ~= quarter second
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wait:
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lda READTDI
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bne wait ; Loop until timer runs out
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jmp main ; loop
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.segment "VECTORS6502"
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.ORG $fffa
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.word nmi,reset,irq
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.reloc
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4
assemble.sh
Executable file
4
assemble.sh
Executable file
@ -0,0 +1,4 @@
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||||
#!/bin/zsh
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ca65 -vvv --cpu 6502 -l build/listing.txt -o build/abn6507rom.o abn6507rom.s
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ld65 -o build/abn6507rom.bin -C memmap.cfg "./build/abn6507rom.o" #"./build/crom.o" "./build/userland.o"
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minipro -s -p "W27C512@DIP28" -w build/abn6507rom.bin
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||||
1
build/readme.md
Normal file
1
build/readme.md
Normal file
@ -0,0 +1 @@
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||||
This file is intentionally left empty
|
||||
691
hardware/6502.kicad_sym
Normal file
691
hardware/6502.kicad_sym
Normal file
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)
|
||||
(rectangle (start 5.08 4.953) (end 4.318 5.207)
|
||||
(stroke (width 0) (type default) (color 0 0 0 0))
|
||||
(fill (type none))
|
||||
)
|
||||
)
|
||||
(symbol "USB_B_Micro-Connector_1_1"
|
||||
(pin power_out line (at 7.62 5.08 180) (length 2.54)
|
||||
(name "VBUS" (effects (font (size 1.27 1.27))))
|
||||
(number "1" (effects (font (size 1.27 1.27))))
|
||||
)
|
||||
(pin passive line (at 7.62 -2.54 180) (length 2.54)
|
||||
(name "D-" (effects (font (size 1.27 1.27))))
|
||||
(number "2" (effects (font (size 1.27 1.27))))
|
||||
)
|
||||
(pin passive line (at 7.62 0 180) (length 2.54)
|
||||
(name "D+" (effects (font (size 1.27 1.27))))
|
||||
(number "3" (effects (font (size 1.27 1.27))))
|
||||
)
|
||||
(pin passive line (at 7.62 -5.08 180) (length 2.54)
|
||||
(name "ID" (effects (font (size 1.27 1.27))))
|
||||
(number "4" (effects (font (size 1.27 1.27))))
|
||||
)
|
||||
(pin power_out line (at 0 -10.16 90) (length 2.54)
|
||||
(name "GND" (effects (font (size 1.27 1.27))))
|
||||
(number "5" (effects (font (size 1.27 1.27))))
|
||||
)
|
||||
(pin passive line (at -2.54 -10.16 90) (length 2.54)
|
||||
(name "Shield" (effects (font (size 1.27 1.27))))
|
||||
(number "6" (effects (font (size 1.27 1.27))))
|
||||
)
|
||||
)
|
||||
)
|
||||
)
|
||||
2
hardware/6507 SBC.kicad_pcb
Normal file
2
hardware/6507 SBC.kicad_pcb
Normal file
@ -0,0 +1,2 @@
|
||||
(kicad_pcb (version 20211014) (generator pcbnew)
|
||||
)
|
||||
75
hardware/6507 SBC.kicad_prl
Normal file
75
hardware/6507 SBC.kicad_prl
Normal file
@ -0,0 +1,75 @@
|
||||
{
|
||||
"board": {
|
||||
"active_layer": 0,
|
||||
"active_layer_preset": "",
|
||||
"auto_track_width": true,
|
||||
"hidden_nets": [],
|
||||
"high_contrast_mode": 0,
|
||||
"net_color_mode": 1,
|
||||
"opacity": {
|
||||
"pads": 1.0,
|
||||
"tracks": 1.0,
|
||||
"vias": 1.0,
|
||||
"zones": 0.6
|
||||
},
|
||||
"ratsnest_display_mode": 0,
|
||||
"selection_filter": {
|
||||
"dimensions": true,
|
||||
"footprints": true,
|
||||
"graphics": true,
|
||||
"keepouts": true,
|
||||
"lockedItems": true,
|
||||
"otherItems": true,
|
||||
"pads": true,
|
||||
"text": true,
|
||||
"tracks": true,
|
||||
"vias": true,
|
||||
"zones": true
|
||||
},
|
||||
"visible_items": [
|
||||
0,
|
||||
1,
|
||||
2,
|
||||
3,
|
||||
4,
|
||||
5,
|
||||
8,
|
||||
9,
|
||||
10,
|
||||
11,
|
||||
12,
|
||||
13,
|
||||
14,
|
||||
15,
|
||||
16,
|
||||
17,
|
||||
18,
|
||||
19,
|
||||
20,
|
||||
21,
|
||||
22,
|
||||
23,
|
||||
24,
|
||||
25,
|
||||
26,
|
||||
27,
|
||||
28,
|
||||
29,
|
||||
30,
|
||||
32,
|
||||
33,
|
||||
34,
|
||||
35,
|
||||
36
|
||||
],
|
||||
"visible_layers": "fffffff_ffffffff",
|
||||
"zone_display_mode": 0
|
||||
},
|
||||
"meta": {
|
||||
"filename": "6507 SBC.kicad_prl",
|
||||
"version": 3
|
||||
},
|
||||
"project": {
|
||||
"files": []
|
||||
}
|
||||
}
|
||||
294
hardware/6507 SBC.kicad_pro
Normal file
294
hardware/6507 SBC.kicad_pro
Normal file
@ -0,0 +1,294 @@
|
||||
{
|
||||
"board": {
|
||||
"layer_presets": []
|
||||
},
|
||||
"boards": [],
|
||||
"cvpcb": {
|
||||
"equivalence_files": []
|
||||
},
|
||||
"erc": {
|
||||
"erc_exclusions": [],
|
||||
"meta": {
|
||||
"version": 0
|
||||
},
|
||||
"pin_map": [
|
||||
[
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
1,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
2
|
||||
],
|
||||
[
|
||||
0,
|
||||
2,
|
||||
0,
|
||||
1,
|
||||
0,
|
||||
0,
|
||||
1,
|
||||
0,
|
||||
2,
|
||||
2,
|
||||
2,
|
||||
2
|
||||
],
|
||||
[
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
1,
|
||||
0,
|
||||
1,
|
||||
0,
|
||||
1,
|
||||
2
|
||||
],
|
||||
[
|
||||
0,
|
||||
1,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
1,
|
||||
1,
|
||||
2,
|
||||
1,
|
||||
1,
|
||||
2
|
||||
],
|
||||
[
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
1,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
2
|
||||
],
|
||||
[
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
2
|
||||
],
|
||||
[
|
||||
1,
|
||||
1,
|
||||
1,
|
||||
1,
|
||||
1,
|
||||
0,
|
||||
1,
|
||||
1,
|
||||
1,
|
||||
1,
|
||||
1,
|
||||
2
|
||||
],
|
||||
[
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
1,
|
||||
0,
|
||||
0,
|
||||
1,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
2
|
||||
],
|
||||
[
|
||||
0,
|
||||
2,
|
||||
1,
|
||||
2,
|
||||
0,
|
||||
0,
|
||||
1,
|
||||
0,
|
||||
2,
|
||||
2,
|
||||
2,
|
||||
2
|
||||
],
|
||||
[
|
||||
0,
|
||||
2,
|
||||
0,
|
||||
1,
|
||||
0,
|
||||
0,
|
||||
1,
|
||||
0,
|
||||
2,
|
||||
0,
|
||||
0,
|
||||
2
|
||||
],
|
||||
[
|
||||
0,
|
||||
2,
|
||||
1,
|
||||
1,
|
||||
0,
|
||||
0,
|
||||
1,
|
||||
0,
|
||||
2,
|
||||
0,
|
||||
0,
|
||||
2
|
||||
],
|
||||
[
|
||||
2,
|
||||
2,
|
||||
2,
|
||||
2,
|
||||
2,
|
||||
2,
|
||||
2,
|
||||
2,
|
||||
2,
|
||||
2,
|
||||
2,
|
||||
2
|
||||
]
|
||||
],
|
||||
"rule_severities": {
|
||||
"bus_definition_conflict": "error",
|
||||
"bus_entry_needed": "error",
|
||||
"bus_label_syntax": "error",
|
||||
"bus_to_bus_conflict": "error",
|
||||
"bus_to_net_conflict": "error",
|
||||
"different_unit_footprint": "error",
|
||||
"different_unit_net": "error",
|
||||
"duplicate_reference": "error",
|
||||
"duplicate_sheet_names": "error",
|
||||
"extra_units": "error",
|
||||
"global_label_dangling": "warning",
|
||||
"hier_label_mismatch": "error",
|
||||
"label_dangling": "error",
|
||||
"lib_symbol_issues": "warning",
|
||||
"multiple_net_names": "warning",
|
||||
"net_not_bus_member": "warning",
|
||||
"no_connect_connected": "warning",
|
||||
"no_connect_dangling": "warning",
|
||||
"pin_not_connected": "error",
|
||||
"pin_not_driven": "error",
|
||||
"pin_to_pin": "warning",
|
||||
"power_pin_not_driven": "error",
|
||||
"similar_labels": "warning",
|
||||
"unannotated": "error",
|
||||
"unit_value_mismatch": "error",
|
||||
"unresolved_variable": "error",
|
||||
"wire_dangling": "error"
|
||||
}
|
||||
},
|
||||
"libraries": {
|
||||
"pinned_footprint_libs": [],
|
||||
"pinned_symbol_libs": []
|
||||
},
|
||||
"meta": {
|
||||
"filename": "6507 SBC.kicad_pro",
|
||||
"version": 1
|
||||
},
|
||||
"net_settings": {
|
||||
"classes": [
|
||||
{
|
||||
"bus_width": 12.0,
|
||||
"clearance": 0.2,
|
||||
"diff_pair_gap": 0.25,
|
||||
"diff_pair_via_gap": 0.25,
|
||||
"diff_pair_width": 0.2,
|
||||
"line_style": 0,
|
||||
"microvia_diameter": 0.3,
|
||||
"microvia_drill": 0.1,
|
||||
"name": "Default",
|
||||
"pcb_color": "rgba(0, 0, 0, 0.000)",
|
||||
"schematic_color": "rgba(0, 0, 0, 0.000)",
|
||||
"track_width": 0.25,
|
||||
"via_diameter": 0.8,
|
||||
"via_drill": 0.4,
|
||||
"wire_width": 6.0
|
||||
}
|
||||
],
|
||||
"meta": {
|
||||
"version": 2
|
||||
},
|
||||
"net_colors": null
|
||||
},
|
||||
"pcbnew": {
|
||||
"last_paths": {
|
||||
"gencad": "",
|
||||
"idf": "",
|
||||
"netlist": "",
|
||||
"specctra_dsn": "",
|
||||
"step": "",
|
||||
"vrml": ""
|
||||
},
|
||||
"page_layout_descr_file": ""
|
||||
},
|
||||
"schematic": {
|
||||
"annotate_start_num": 0,
|
||||
"drawing": {
|
||||
"default_line_thickness": 6.0,
|
||||
"default_text_size": 50.0,
|
||||
"field_names": [],
|
||||
"intersheets_ref_own_page": false,
|
||||
"intersheets_ref_prefix": "",
|
||||
"intersheets_ref_short": false,
|
||||
"intersheets_ref_show": false,
|
||||
"intersheets_ref_suffix": "",
|
||||
"junction_size_choice": 3,
|
||||
"label_size_ratio": 0.375,
|
||||
"pin_symbol_size": 25.0,
|
||||
"text_offset_ratio": 0.15
|
||||
},
|
||||
"legacy_lib_dir": "",
|
||||
"legacy_lib_list": [],
|
||||
"meta": {
|
||||
"version": 1
|
||||
},
|
||||
"net_format_name": "",
|
||||
"page_layout_descr_file": "",
|
||||
"plot_directory": "",
|
||||
"spice_adjust_passive_values": false,
|
||||
"spice_external_command": "spice \"%I\"",
|
||||
"subpart_first_id": 65,
|
||||
"subpart_id_separator": 0
|
||||
},
|
||||
"sheets": [
|
||||
[
|
||||
"8d631a81-2764-4115-9853-f6135511f878",
|
||||
""
|
||||
]
|
||||
],
|
||||
"text_variables": {}
|
||||
}
|
||||
3269
hardware/6507 SBC.kicad_sch
Normal file
3269
hardware/6507 SBC.kicad_sch
Normal file
File diff suppressed because it is too large
Load Diff
11
memmap.cfg
Executable file
11
memmap.cfg
Executable file
@ -0,0 +1,11 @@
|
||||
MEMORY {
|
||||
ZP: start = $0, size = $100, type = rw, define = yes;
|
||||
ROM: start = $F000, size = $1000, file = %O;
|
||||
}
|
||||
|
||||
SEGMENTS {
|
||||
RODATA: load = ROM, type = ro;
|
||||
ZEROPAGE: load = ZP, type = zp;
|
||||
VECTORS6502: load = ROM, start = $FFFA, type = overwrite;
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user